Konica Minolta 421

157
PARTS GUIDE MANUAL  APRIL 2008 bizhub 421  A0R6 

description

Parts Catalog

Transcript of Konica Minolta 421

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PARTS GUIDE MANUAL

 APRIL 2008 

bizhub 421 A0R6 

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04/16/2008

INFORMATION FOR PARTS GUIDE MANUAL

To find correct Parts No., refer to the “HOW TO MAKE THE BEST USE OF THIS MANUAL” in the following page.

HOW TO MAKE THE BEST USE OF THIS MANUAL

1 When you order, please check the proper figures beforehand that are on Our Parts Guide Manual, and order with the appropriate figures.

2 For screws, Nuts, Washers, retaining rings and Pins which are used in this model, one letter is shown on the Standard parts column of Parts list and

exploded diagrams.

3 In order to maintain safety of the product, some specific parts composed of this product are set up as "essential safety parts".

4 The assigned parts number for the "essential safety parts" is indicated as "SP00-****".

When replacing these parts, follow precautions for disassembling and installing which are listed in the Service Manual.Do not use any parts that are not set up as

5 means that there are exclusive parts for each destination.

Please check the appropriate destination when you order.

6 Revision Mark

Marked as on the illustration shows that the revision has been made.

7 All rights reserved. (any reprints or quotations are prohibited.)

Use of this parts guide manual should be strictly supervised to avoid disclosure of confidential information.

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SYSTEM OUTLINE

15

16 17

1314

12

9

10

2

1

3

4

5

86

7

11

18 19 20 21

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GENERAL CONTENTS

No. Description Model

1 DIGITAL MFP B/W bizhub 421

2 DOCUMENT FEEDER DF-613

3 PRINT CONTROLLER IC-2074 OTHER OPTION EK-703

5 OTHER OPTION HD-509

6 PAPER FEEDER PC-407

7 PAPER FEEDER PC-206

8 PAPER FEEDER LU-203

9 OTHER OPTION RU-507

10 SORTER/FINISHER FS-523

11 STACKER JS-502

12 OTHER OPTION OT-504

13 OTHER OPTION OT-602

14 SORTER/FINISHER FS-522

15 SORTER/FINISHER MT-502

16 SORTER/FINISHER SD-507

17 PUNCH UNIT PU-501

18 FAX CONTROLLER MK-70819 FAX CONTROLLER ML-503

20 FAX CONTROLLER FK-502

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DIAGRAMS OF MAIN PARTS SECTION

4 3

511

2

1

18

16

19

20

8

7

17

9

15

10

1314

12

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CONTENTSNo. DESCRIPTION PAGE No.

1 MAIN FRAME P1 P2 P3 P4

2 EXTERNAL PARTS P5 P6

3 OPERATION UNIT P7

4 OPTICS UNIT P8 P9 P10

5 WRITE UNIT P11

6 DRIVING UNIT P12 P13 P14 P15 P167 DRUM CARTRIDGE P17 P18 P19 P20

8 CHARGING UNIT P21

9 TRANSFER SEPARATOR CORONA UNIT P22

10 DEVELOPING UNIT P23 P24

11 TONER SUPPLY UNIT P25 P26 P27 P28 P29

12 DEVELOPING SUCTION UNIT P30

13 PAPER FEED UNIT P31 P32 P33 P34

14 MANUAL FEED UNIT P35 P36 P37

15 REGISTRATION UNIT P38

16 TURNOVER UNIT P39 P40

17 CONVEYANCE UNIT P41

18 CASSETTE P42

19 AUTO DUPLEX UNIT P43 P44 P45 P46 P47 P48

20 FIXING UNIT P49 P50 P51 P52 P53 P54

21 ELECTRIC PARTS P55 P56 P57 P58

22 WIRING P59 P60 P61 P62 P63 P64 P65 P66 P67 P68

23 WIRING ACCESSORY AND JIGS P69 P70

24 ACCESSORY PARTS P71

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INDEXParts No. Page No.

000V -18- 1 70-12

000V -18- 2 70-12

000V 1001 0 70-7

000V 1002 0 70-8

000V 1003 0 70-9

000V 1004 0 70-10000V 1005 0 70-11

00Z9 2450 8 69-20

00Z9 2451 2 69-21

00Z9 2452 4 69-22

0294 2064 0 23-9

0830 2014 0 6-20

0928 3033 01 46-7

0992 3014 01 42-36

1052 4412 01 31-22

1065 3086 01 31-19

1065 3086 01 33-25

1067 2501 01 31-27

1067 2501 01 33-22

1067 2502 01 36-26

1067 2513 01 16-30

1070 3072 01 31-21

1075 2565 01 36-7

1134 3041 01 33-10

1134 3041 01 45-3

1134 3042 02 37-20

1136 2060 0 24-14

1139 3169 01 40-1

1149 3454 01 34-29

1155 2518 01 16-28

1164 2155 01 1-6

1164 3065 01 54-21

1200 2105 02 39-141200 5212 04 33-7

1274 3603 01 42-29

12QV 4066 0 38-18

1300 3322 17 36-24

13QA 1033 0 15-7

13QA 7602 1 38-17

13QA 8552 1 38-7

13RN 7312 0 58-11

1900 4141 0 12-6

1900 4141 0 13-5

1900 4141 0 14-4

1900 4141 0 15-17

1900 4142 0 14-61921 4171 0 51-3

25AA 7553 0 47-16

25HA 2510 0 21-2

25HA 3215 2 26-6

26NA -909 2E 11-2

26NA -918 2E 18-6

26NA -951 2E 10-20

26NA 1240 1 6-22

26NA 1255 0 5-11

26NA 1520 0 13-24

26NA 1560 0 13-4

26NA 1728 0 12-3

26NA 1728 0 13-19

26NA 1728 0 15-2

26NA 1728 0 16-6

26NA 1757 0 15-10

26NA 1758 0 13-21

26NA 1759 0 15-11

26NA 2014 0 20-9

26NA 2016 0 20-14

26NA 2017 0 20-15

26NA 2020 0 18-8

26NA 2022 0 20-7

26NA 2024 2 17-6

26NA 2025 0F 18-3

26NA 2027 0 17-8

26NA 2029 0 17-1226NA 2030 0 17-9

26NA 2030 0 32-13

26NA 2031 0 17-10

26NA 2037 0D 19-10

26NA 2038 0 19-7

26NA 2042 0 19-5

26NA 2048 0 18-2

Parts No. Page No.

26NA 2055 3 20-11

26NA 2056 0 20-10

26NA 2057 0 19-2

26NA 2058 0 20-4

26NA 2071 0 20-13

26NA 2076 0D 19-426NA 2086 0D 19-11

26NA 2087 0 19-13

26NA 2092 0 19-1

26NA 2095 0 18-7

26NA 2107 0 19-9

26NA 2116 0 20-8

26NA 2128 0 19-19

26NA 2133 0 18-9

26NA 2134 0 17-2

26NA 2136 0 17-20

26NA 2136 0 24-21

26NA 2138 0 17-5

26NA 2140 0 17-14

26NA 2142 0 17-13

26NA 2143 0 17-17

26NA 2144 0 17-22

26NA 2517 0 21-11

26NA 2518 0 21-9

26NA 2608 0 22-3

26NA 2623 0 22-5

26NA 2625 0 22-11

26NA 2626 0 22-12

26NA 3009 0 24-8

26NA 3021 1G 24-24

26NA 3036 0 24-22

26NA 3044 0 24-17

26NA 3045 0 23-826NA 3047 0 23-2

26NA 3049 0 23-1

26NA 3063 0 24-23

26NA 3065 0 24-16

26NA 3066 0 24-15

26NA 3070 0 24-13

26NA 3072 0 23-4

Parts No. Page No.

26NA 3073 0 24-11

26NA 3075 0 24-28

26NA 3077 0 24-4

26NA 3084 0 24-19

26NA 3085 0 24-3

26NA 3086 0 24-2526NA 3087 0 13-26

26NA 3093 0 24-27

26NA 3094 0 24-5

26NA 3095 0 24-10

26NA 3096 0 24-9

26NA 3101 0 24-30

26NA 3204 0 26-14

26NA 3209 0 26-25

26NA 3220 0 26-23

26NA 3228 0 26-21

26NA 3230 0 26-27

26NA 3231 1E 25-16

26NA 3242 0 25-14

26NA 3243 0 26-28

26NA 3254 0 26-22

26NA 3255 0 26-24

26NA 3256 0 26-9

26NA 3259 0 25-12

26NA 3266 0 25-6

26NA 3268 0 25-4

26NA 3269 0 26-29

26NA 3287 0 27-9

26NA 3290 0 26-26

26NA 3291 0 26-16

26NA 3292 0 26-17

26NA 3293 0 26-15

26NA 3294 0 25-1326NA 3295 0 25-15

26NA 3296 0 26-7

26NA 3297 0 26-13

26NA 4082 0 38-12

26NA 4256 0 47-17

26NA 4507 1 41-10

26NA 4514 1 38-23

Parts No. Page No.

26NA 4536 0 38-21

26NA 4537 1 38-20

26NA 4538 1 41-19

26NA 4549 0 21-14

26NA 4549 0 41-11

26NA 4552 0 41-126NA 5037 0 12-21

26NA 5321 1 50-17

26NA 5329 0 51-12

26NA 5346 0 51-6

26NA 5349 0 54-9

26NA 5359 0 12-22

26NA 5359 0 13-20

26NA 5361 0 54-8

26NA 5362 0 49-8

26NA 5371 2 49-5

26NA 5372 0 49-6

26NA 5374 0 49-17

26NA 5377 0 49-19

26NA 5384 0 51-11

26NA 5403 0 50-1

26NA 5414 0 51-25

26NA 5419 0 51-24

26NA 5423 0 49-18

26NA 5423 0 50-3

26NA 5424 0 51-10

26NA 5428 0 50-16

26NA 5429 0 51-7

26NA 5430 0 54-12

26NA 6115 0 9-6

26NA 6130 0 9-4

26NA 6131 0 10-17

26NA 6134 0 10-2126NA 6137 0 10-14

26NA 6138 0 10-4

26NA 6139 0 10-23

26NA 6141 0 10-22

26NA 6153 1 10-5

26NA 6154 0 10-7

26NA 6155 1 10-12

Parts No. Page No.

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26NA 6156 0 10-3

26NA 6159 0 10-13

26NA 6160 0 10-8

26NA 6161 0 10-6

26NA 6173 2 8-1

26NA 6175 1 10-26

26NA 6181 2 8-4

26NA 6184 0 10-3126NA 6194 0 10-2

26NA 6206 0 10-18

26NA 6213 0 5-10

26NA 6216 0 8-14

26NA 6228 0 8-5

26NA 6232 0 10-32

26NA 6239 1 10-11

26NA 6245 1 8-13

26NA 6528 0 4-2

26NA 6529 0 4-1

26NA 7325 1 22-9

26NA 7325 1 56-17

26NA 7357 0 58-1226NA 7373 2 57-1

26NA 8006 1 25-5

26NA 8251 3 25-11

26NA 8804 1 23-10

26NA 8846 1 57-6

26NA 9019 1 59-1

26NA 9031 1 62-9

26NA 9035 1 59-2

26NA JG01 1 70-6

26NA R701 00 57-7

26NA R702 00 13-3

26NA R703 00 18-4

26NA R704 00 17-23

26NA R705 00 17-4

26NA R706 00 18-5

26NA R707 00 24-12

26NA R708 00 23-3

26NA R709 00 3-9

26NA R710 00 12-19

Parts No. Page No.

26NA R711 00 10-1

26NA R712 00 56-18

26TA -235 0 19-17

26TA -236 0 19-18

26TA -237 1 19-22

26TA 2032 0 17-7

26TA 2053 1 19-15

26TA 2088 1 19-1226TA 2146 0 19-26

26TA 2147 0 19-25

26TA 2148 0 19-24

26TA 2149 0 19-23

26TA 2151 0 20-6

26TA 2154 0 19-16

26TA 2161 1 19-20

26TA 3258 0 25-7

26TA 3261 0 25-10

26TA 3264 0 25-8

26TA 3296 0 27-2

26TA 3297 0 27-3

26TA 3298 0 27-626TA 3299 0 27-4

26TA 3301 0 26-18

26TA 6251 0 8-9

26TA 6252 1 10-9

26TA 6253 0 10-10

26TA 8452 1 8-10

26TA R701 00 19-21

26TA R702 00 24-7

27LA 5383 0 54-7

27LA 5419 0 54-2

27LA 5446 0 3-10

27LA 7391 0 57-2

27LA 7399 0 58-17

27LA 8003 2E 12-1

27LA 8051 1 57-3

27LA 8803 1 56-9

3920 4526 0 17-24

4002 3108 01 42-37

4002 3110 01 55-6

Parts No. Page No.

4002 3131 01 55-5

4002 3779 01 39-17

4002 7306 01 42-20

4011 3012 01 55-1

4011 3020 01 42-27

4011 3021 01 42-26

4011 5852 02 39-5

4011 5852 02 45-124030 0151 01 32-15

4030 0151 01 34-11

4030 0207 04 39-16

4030 0216 05 37-9

4030 2005 02 1-16

4030 2006 01 1-1

4030 2007 01 1-13

4030 2008 02 1-14

4030 2009 01 3-3

4030 2010 01 1-5

4030 2011 01 1-3

4030 2018 01 2-1

4030 2022 01 48-64030 2023 01 48-8

4030 2029 02 1-12

4030 2038 02 1-11

4030 2039 02 3-4

4030 2041 02 1-8

4030 2042 02 1-2

4030 2062 01 3-2

4030 2080 01 2-19

4030 2081 01 1-15

4030 3001 03 31-28

4030 3002 02 31-10

4030 3002 02 33-16

4030 3003 01 31-12

4030 3003 01 33-21

4030 3004 01 31-20

4030 3005 01 31-7

4030 3005 01 33-13

4030 3008 01 31-11

4030 3008 01 33-17

Parts No. Page No.

4030 3010 02 33-37

4030 3011 03 31-24

4030 3011 03 33-27

4030 3012 01 31-25

4030 3012 01 33-28

4030 3013 01 32-17

4030 3013 01 34-9

4030 3014 01 32-74030 3014 01 34-7

4030 3016 12 31-30

4030 3016 12 33-11

4030 3017 03 32-6

4030 3017 03 34-5

4030 3018 01 33-6

4030 3019 02 33-9

4030 3021 01 33-36

4030 3022 01 33-26

4030 3023 03 31-15

4030 3025 02 32-14

4030 3025 02 34-17

4030 3026 02 32-104030 3027 02 32-11

4030 3030 01 31-18

4030 3030 01 33-24

4030 3031 01 33-8

4030 3032 03 32-2

4030 3034 01 31-8

4030 3034 01 33-14

4030 3036 01 31-13

4030 3036 01 34-18

4030 3037 01 32-12

4030 3037 01 34-16

4030 3039 01 32-18

4030 3039 01 34-8

4030 3041 02 31-4

4030 3042 02 33-5

4030 3046 03 55-16

4030 3047 02 55-4

4030 3048 02 55-13

4030 3049 01 55-14

Parts No. Page No.

4030 3051 01 16-22

4030 3052 01 16-25

4030 3053 01 16-27

4030 3054 01 16-29

4030 3055 01 16-26

4030 3057 01 16-19

4030 3059 01 16-35

4030 3060 01 16-344030 3063 01 33-35

4030 3064 01 33-32

4030 3067 01 16-21

4030 3068 01 33-34

4030 3069 01 33-33

4030 3077 01 32-16

4030 3077 01 34-10

4030 3078 01 32-4

4030 3078 01 34-3

4030 3079 01 32-9

4030 3079 01 34-2

4030 3080 01 32-8

4030 3081 01 55-104030 3083 01 55-12

4030 3084 01 31-2

4030 3085 01 31-16

4030 3086 01 31-3

4030 3087 01 31-1

4030 3088 01 31-14

4030 3091 01 55-2

4030 3092 01 33-31

4030 3093 01 36-17

4030 3095 01 34-19

4030 3105 01 34-12

4030 3107 01 34-22

4030 3108 01 32-1

4030 3112 02 33-1

4030 3114 02 34-23

4030 3115 01 34-30

4030 3116 01 34-24

4030 3117 02 34-27

4030 3121 01 34-34

Parts No. Page No.

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4030 3122 01 34-33

4030 3123 01 34-32

4030 3124 03 34-13

4030 3125 01 32-5

4030 3125 01 34-14

4030 3128 01 33-4

4030 3129 03 34-15

4030 3134 03 34-314030 3135 01 34-25

4030 3201 09 42-12

4030 3203 01 42-16

4030 3205 01 42-35

4030 3206 01 42-34

4030 3207 01 42-25

4030 3208 02 55-9

4030 3211 02 42-8

4030 3212 01 42-19

4030 3214 02 42-21

4030 3215 01 42-22

4030 3216 01 42-32

4030 3217 01 42-34030 3218 01 42-33

4030 3222 03 42-24

4030 3223 03 42-28

4030 3224 02 42-41

4030 3224 02 55-11

4030 3226 01 42-30

4030 3227 01 42-13

4030 3228 12 42-11

4030 3229 02 42-31

4030 3401 13 36-22

4030 3402 01 35-14

4030 3403 01 35-15

4030 3404 01 35-10

4030 3412 01 37-7

4030 3414 01 37-19

4030 3415 02 37-18

4030 3416 02 36-34

4030 3417 01 36-25

4030 3419 01 36-15

Parts No. Page No.

4030 3420 02 36-14

4030 3422 01 36-20

4030 3424 01 35-19

4030 3427 01 36-23

4030 3428 01 35-17

4030 3429 02 36-1

4030 3430 01 36-18

4030 3432 07 36-354030 3434 01 36-4

4030 3435 01 37-27

4030 3436 01 37-13

4030 3437 01 37-28

4030 3438 01 35-23

4030 3441 01 36-5

4030 3444 01 36-29

4030 3445 01 36-30

4030 3446 01 37-17

4030 3447 01 36-28

4030 3448 01 35-20

4030 3455 02 37-11

4030 3456 01 35-54030 3457 03 35-18

4030 3460 02 37-8

4030 3463 01 37-10

4030 3464 01 36-27

4030 3465 01 36-31

4030 3467 01 36-9

4030 3472 01 37-14

4030 3473 02 37-26

4030 3474 01 35-13

4030 3475 01 35-11

4030 3476 01 35-4

4030 3477 01 35-3

4030 3478 02 36-11

4030 3479 01 36-2

4030 3481 01 35-24

4030 3484 01 35-6

4030 3486 01 37-1

4030 3487 01 37-3

4030 3489 01 35-16

Parts No. Page No.

4030 3492 01 35-12

4030 3523 02 57-14

4030 3524 01 57-15

4030 3703 01 44-1

4030 3707 01 46-8

4030 3708 01 46-10

4030 3709 01 46-15

4030 3710 01 43-104030 3713 01 43-4

4030 3725 01 43-14

4030 3726 01 43-3

4030 3733 03 43-11

4030 3734 01 43-15

4030 3735 01 44-3

4030 3737 01 46-6

4030 3738 03 46-5

4030 3739 01 46-3

4030 3740 01 46-14

4030 3741 03 46-13

4030 3742 01 46-12

4030 3743 02 46-114030 3744 01 43-19

4030 3745 01 43-21

4030 3748 01 43-7

4030 3749 01 43-5

4030 3749 01 46-17

4030 3750 01 46-16

4030 3755 01 44-9

4030 3760 01 46-2

4030 3805 02 40-11

4030 3806 02 45-9

4030 3807 03 40-7

4030 3808 01 40-12

4030 3809 01 39-13

4030 3810 01 39-12

4030 3811 01 45-4

4030 3812 01 45-5

4030 3813 01 45-6

4030 3814 01 45-7

4030 3817 01 40-6

Parts No. Page No.

4030 3818 02 40-9

4030 3819 01 40-10

4030 3821 01 39-18

4030 3823 01 40-8

4030 3824 01 45-11

4030 3825 02 45-10

4030 3826 01 40-4

4030 3829 01 45-84030 3834 01 39-19

4030 5717 01 53-12

4030 5750 03 53-2

4030 5753 01 53-14

4030 5802 01 52-15

4030 5803 01 54-14

4030 5805 03 52-11

4030 5805 03 53-11

4030 5806 01 52-12

4030 5808 02 53-4

4030 5809 02 53-7

4030 5810 02 53-8

4030 5811 01 54-154030 5812 01 52-16

4030 5816 01 52-24

4030 5817 02 52-25

4030 5820 03 52-23

4030 5821 02 52-22

4030 5822 03 52-26

4030 5823 01 52-2

4030 5827 01 52-30

4030 5827 01 53-3

4030 5834 02 54-18

4030 5836 01 52-19

4030 5839 03 52-3

4030 5840 02 52-17

4030 5841 01 54-16

4030 5842 01 52-33

4030 5843 02 52-10

4030 5844 02 52-18

4030 5845 02 52-20

4030 5847 01 52-1

Parts No. Page No.

4030 5848 01 52-14

4030 5854 01 52-8

4030 5855 01 52-6

4030 5856 01 52-9

4030 5856 01 53-9

4030 5857 01 52-7

4030 5858 01 52-5

4030 6214 00 42-384030 6215 00 42-39

4030 6810 02 68-3

4030 6811 01 31-5

4030 6812 02 67-1

4030 6813 02 67-2

4030 6814 03 68-1

4030 6818 01 68-2

4030 6824 01 59-4

4030 7306 02 37-30

4030 7307 02 37-30

4030 7308 02 37-30

4030 7315 01 1-4

4030 R705 00 16-314030 R707 00 36-19

4030 R708 00 36-6

4034 0151 01 35-8

4037 0104 01 55-3

4037 0906 01 31-26

4037 0906 01 33-3

4037 0906 01 36-3

4037 0906 01 37-21

4037 0906 01 39-22

4037 0906 01 55-7

4037 3204 01 42-2

4037 3213 12 42-14

4037 6899 01 37-12

4040 0780 01 57-5

4040 3096 01 31-23

4040 3096 01 33-29

4040 3097 01 31-17

4040 3097 01 33-23

4040 3443 01 36-32

Parts No. Page No.

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4040 3495 01 35-26

4040 3496 01 35-25

4040 3497 01 36-33

4040 3833 02 39-4

4040 5610 00 32-19

4040 5610 00 34-6

4040 5612 00 32-20

4040 5612 00 34-44040 5758 01 51-21

4040 6205 00 1-9

4040 R706 00 52-13

4040 R707 00 52-4

40AA 2017 0 17-16

40AA 2023 0 17-11

40AA 3229 0 48-4

40AA 5347 0 49-16

40AA 7319 1 17-25

40AA 8501 1 56-12

40AA 8803 1 26-19

40LA -215 1 19-6

40LA -221 0 17-2640LA -222 0 17-27

40LA 1740 0 16-7

40LA 1754 0 15-4

40LA 1755 0 15-5

40LA 1756 0 15-9

40LA 2005 0 19-3

40LA 2019 0 20-1

40LA 2034 0D 20-5

40LA 2036 0E 20-2

40LA 2094 0 17-21

40LA 2167 0 18-1

40LA 2501 1 21-4

40LA 2502 0 21-13

40LA 2504 0 21-12

40LA 2505 0 21-5

40LA 2507 0 21-10

40LA 2516 0 21-6

40LA 2519 0 21-3

40LA 2520 0 21-15

Parts No. Page No.

40LA 3227 0 26-10

40LA 5443 0 50-13

40LA 6114 0 8-2

40LA 6116 1E 9-16

40LA 6119 0 10-29

40LA 6121 0 10-19

40LA 6174 1 8-12

40LA 6183 0 10-3040LA 6192 0 10-28

40LA 6193 0 10-27

40LA 6201 0 9-9

40LA 6246 0 9-18

40LA 6526 0 11-3

40LA 7384 0 58-15

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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Parts No. Page No.

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V651 0100 05 70-2

V651 0200 01 70-3

Parts No. Page No.

8/8

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MAIN FRAME

P 1a

a

a

b

c

c

c

d

e

e

e

e

e

e

g

g

h

h

i

8

9

9

1010

1

2

3

4

56

7

1111

12

13

14

15

16

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MAIN FRAMEKey Part No. Description Destinations Class QTY Standard parts

1 4030 2006 01 REINFORCE PLATE D 1 a-V137 0306 03b-1079 2219 01c-V144 0306 03d-V121 0306 03e-V153 0410 03f-V153 0308 03g-V137 0408 03h-V116 0308 03i-V135 0310 03

2 4030 2042 02 BRACKET D 1

3 4030 2011 01 BRACKET D 1

4 4030 7315 01 LABEL D 1

5 4030 2010 01 BRACKET D 1

6 1164 2155 01 C ONTACT C 1

7 A0R5 1126 00 Support Part D 1

8 4030 2041 02 BRACKET D 1

9 4040 6205 00 Holder D 2

10 4348 6206 00 Stop ring D 211 4030 2038 02 STOPPER D 2

12 4030 2029 02 RAIL D 1

13 4030 2007 01 REINFORCE PLATE D 1

14 4030 2008 02 RAIL D 1

15 4030 2081 01 SPACER D 1

16 4030 2005 02 REINFORCE PLATE D 1

Page. 1

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MAIN FRAME

P 2

SW1

TCT

a a

a

b bb

b

6

7 8

e

b

b

b

b

b

b

b

d

d

d

g

h

ip

k

k

m

n

c

23

10

11

121

2

3

4

5

9

21

22

13

15

14

16

17

18

19

19

20bizhub 421

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MAIN FRAMEKey Part No. Description Destinations Class QTY Standard parts

1 4030 2018 01 BRACKET D 1 a-V144 0306 03b-V121 0306 03c-V137 0308 03d-V137 0306 03e-V121 0306 04f-V121 0314 03g-V151 0408 03h-V121 0304 03i-V153 0410 03k-V207 0300 01m-V123 0306 03

n-V153 0408 03p-V144 0306 03r-V137 0310 03

2 50GA 1013 0 READ MOUNTING PEDESTAL /LEFT D 1

3 A0R5 1016 00 Board Mounting Stay /Rear D 1

4 50GA 1030 0 EXTERNAL SUPPORT PLATE /1 D 1

5 A0R5 1033 00 Holding Plate /C D 1

6 A0R5 1017 00 Holding Plate /A D 1

7 A02E 2639 00 Cord clamp D 1

8 A0R5 1032 00 Holding Plate /B D 1

9 50GA 5022 0 WIRE SUPPORT PART 4 C 1

10 50GA 1014 0 READ MOUNTING PEDESTAL /RIGHT D 111 50GA 5019 0 WIRE SUPPORT PART 1 C 1

12 50GA 1021 0 READ MOUNTING STAY D 1

13 50GA 1015 0 BOARD MOUNTING STAY /RIGHT D 1

14 50GA 1019 0 ADU LOCK PART/REAR C 1

15 50GA 3074 0 DEVELOPING RAIL /LEFT D 1

16 50GA 1018 0 ADU LOCK PART/ FRONT C 1

17 50GA 1010 0 REINFORCE STAY /2 D 1

18 A0R5 1137 00 Holder D 1

19 4030 2080 01 RUBBER FOOT D 2

20 A0R5 1012 01 Reinforce Stay /4 D 1

21 50GA 1024 0 MOUNTING PLATE /1 D 1

22 50GA 1011 0 REINFORCE STAY /3 D 1

23 9332 5710 11 SWITCH C 1

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MAIN FRAME

P 3

SD4

See Page.61

a

a

a

b

b

cd

e

e

e

e

e

89

10

1

2

2

3

3

4

5

6

711

12

13

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MAIN FRAMEKey Part No. Description Destinations Class QTY Standard parts

1 50GA 5039 0 ADU HOLDING SPRING C 1 a-V121 0306 03b-1079 2219 01c-V121 0304 03d-V217 0400 50e-V137 0306 03f-V151 0308 03

2 4030 2062 01 BRACKET D 2

3 4030 2009 01 GUIDE D 2

4 4030 2039 02 BRACKET D 1

5 50GA 5023 0 ADU STOPPER WIRE C 1

6 50GA 5020 0 WIRE SUPPORT PART 2 C 1

7 50GA 5024 0 WIRE SUPPORT PART 5 C 1

8 50GA 5021 0 WIRE SUPPORT PART 3 C 1

9 26NA R709 00 ADU SOLENOID SHAFT ASSY D 1

10 27LA 5446 0 SOLENOID STOPPER D 111 50GA -550 0 SOLENOID MOUNTING PLATE CAULKI D 1

12 50GA 5366 0 SOLENOID ACTUATOR C 1

13 50GA 3071 0 DEVELOPING RAIL /RIGHT D 1

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MAIN FRAME

P 4

FM2

FM8

aa

a

a

aa

ab

cc

c c

d

d

e

8

8

9

9

10

10

1

1

2

2

3

4

5

6

6

7

7

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MAIN FRAMEKey Part No. Description Destinations Class QTY Standard parts

1 26NA 6529 0 WRITING MOUNT SPRING D 2 a-V121 0306 03b-V121 0306 04c-V151 0308 03d-V121 0320 03e-V137 0306 03

2 26NA 6528 0 WRITING MOUNT PART D 2

3 50GA 1023 0D Guide Part /F D 1

4 50GA 1007 0E Reinforce Stay /B D 1

5 50GA 1006 0 SUPPLY STAY /A D 1

6 50GA 8051 0 COOLING FAN MOTOR C 2

7 50GA 5467 0 FAN MOUNTING PLATE D 2

8 50GA 5466 0 ROLLER COOLING DUCT 4 D 2

9 50GA 5465 0 ROLLER COOLING DUCT 3 D 2

10 50GA 5468 0 SEALING PART D 2

Page. 4

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EXTERNAL PARTS

P 5

SILB

a

ab

b

b

b

c

c

c

c

c

8

9

10

1 2

23

4

5

56

7

18

11

12

13

14

1516

17

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EXTERNAL PARTSKey Part No. Description Destinations Class QTY Standard parts

1 A00J 1689 02 Light blocking Plate C 1 a-V121 0306 03b-V151 0308 03c-V121 0306 04

2 A00J 1682 02 Lens /B C 2

3 A00J 1685 02 Light blocking Cover /C D 1

4 A00J H00E 00 PWB Assembly LED2 I 1

5 A00J 1691 00 Cover C 2

6 A0R5 1604 00 Cover /Rear C 1

7 A0R5 1624 00 Read Cover /Left C 1

8 A0R5 1623 00 Read Cover /Rear C 1

9 50GA 6182 0 ADF DETECTION ACTUATOR C 1

10 26NA 6213 0 DETECTING SPRING C 111 26NA 1255 0 SPRING REGULATING SHEET C 1

12 A0R5 9426 00 Label C 1

13 A0R5 1625 00 Read Cover /Right C 1

14 A0R5 1621 00 Part /Front D 1

15 A0R5 1713 00 Mounting Plate /2 D 1

16 A0R5 1707 01 Read Cover /Front C 1

17 A0R5 1682 01 Guide C 1

18 A0R5 1681 01 Cover C 1

Page. 5

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EXTERNAL PARTS

P 6

a

a

a

a

b

b

b

c

d

d

d

e

e

g

g

g

g

h

h

hi

 j

 j

k

k

k

8

9

10

1

2

3

4

5

5

6 7

1819

20

11

12

1314

15

16

17

21

2223

24

25

26

26

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EXTERNAL PARTSKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 1675 01 Operation Cover /Left C 1 a-V121 0310 03b-V211 0300 80c-V137 0306 04d-V137 0310 04e-V121 0308 04f-V121 0306 03g-V121 0306 04h-V137 0308 04i-V209 0300 03

 j-V145 0308 03k-V151 0308 03

2 A0R5 1678 01 Operation Cover /3 C 1

3 A0R5 1674 00 Operation Cover /Right C 1

4 A0R5 1605 00 Cover /Left C 1

5 A0R5 1762 00 Handle D 2

6 A0R5 1607 00 Cover /1 C 1

7 A0R5 1708 01 Cover C 1

8 A0R5 1364 00 Cover D 1

9 A0R5 1363 00 Cover D 1

10 A0R5 1603 00 Rear Cover /Right C 111 A0R5 1715 00 Cover C 1

12 A0R5 1761 01 Cover C 1

13 A0R5 1714 00 Cover /2 C 1

14 A0R5 1716 00 Auxiliary Cover /1 C 1

15 A0R5 1601 00 Main body Cover /Front C 1

16 A0R5 1679 00 Plate D 1

17 A0R5 1676 00 Cover C 1

18 A0R5 1711 00 Paper exit Cover /A C 1

19 A0R5 A162 00 FULCRUM PLATE ASSY D 1

20 0830 2014 0 STOPPER MATERIAL C 1

21 A0R5 9422 00 Label C 1

22 26NA 1240 1 MAGNET PRESSURE PLATE D 1

23 A0R5 1608 00 Cover C 1

24 A0R5 1719 00 Cover C 1

25 A0R6 9451 01 Label C 1

26 A0R5 1634 00 Front Lifting Handle C 2

Page. 6

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OPERATION UNIT

P 7

 A

 A

LCDBLCD

PWB4

PKB

OB INVB

SW2

PWB3

k

k

nih

h

g

b

b

b

m

m

be

d

dd

b

c

b

b

a

9

1

30

2 7

6

118

23

26

28 29

27

25

5

4

22

15

10

20

21

17

19

18

16

12

13

24

14

10

3

3

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OPERATION UNITKey Part No. Description Destinations Class QTY Standard parts

1 A02E 1928 01 Stay D 1 a-V116 0306 03b-V137 0306 03c-V217 0500 01d-V217 0300 01e-V153 0308 03f-V137 0308 03g-V205 0600 03h-V136 0308 03i-V195 0600 03k-V121 0306 03m-9646 0308 14

n-9735 0306 14

2 A02E 1934 00 Shoulder screw C 1

3 A02E 1930 00 Washer C 2

4 A02E 1916 01 Bracket D 1

5 A02E 1913 02 Arm D 1

6 A0R5 2651 00 Auxiliary Plate /A D 1

7 A02E 1911 00 Bracket D 1

8 A02E 1931 01 Collar D 1

9 A02E 1927 01 Torsion Spring C 1

10 A00J 1919 00 Washer C 211 A02E 1914 02 Arm D 1

12 A02E 1915 02 Bracket D 1

13 A02E 1933 00 Shoulder screw C 1

14 A02E 1932 01 Reinforce Plate D 1

15 A02E 1917 01 Collar D 1

16 A02E 1912 00 Bracket D 1

17 A02E 1918 00 Stay D 1

18 A02E 1694 00 Cover C 1

19 A02E 1924 00 Bracket D 1

20 A02E 1921 01 Bracket D 1

21 A02E 1926 01 Pulling Spring C 1

22 A02E 1683 00 Cover C 1

23 A02E 1925 00 Handle C 1

24 A02E 1923 01 Lever C 1

25 A02E 1922 01 Lever C 1

26 A0R5 M710 00 Panel assembly I 1

27 A02E 9481 00 Panel sheet A C 1

27 A02E 9482 00 Panel sheet B,D1,D3,E,F2,G1,G2,I,K C 127 A02E 9483 00 Panel sheet C C 1

28 A02E 9490 00 Panel sheet A C 1

28 A02E 9491 00 Panel sheet B,D1,D3,E,F2,G1,G2,I,K C 1

29 A02E 9486 00 Panel sheet A C 1

29 A02E 9487 00 Panel sheet B,D1,D3,E,F2,G1,G2,I,K C 1

30 A02E 9494 00 Panel sheet B,G2 C 1

Page. 7

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OPTICS UNIT

P 8

PS32

CCDB

SW3

NF

 A

 A

SP

USBIFB

a

b

a

2

3

1

5

4

a

d

d

a

d

a

a13

12

12

11

6

7

8

9

10

14 c1513

e

e

e

g a

e

21

18

19

20

17

16

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OPTICS UNITKey Part No. Description Destinations Class QTY Standard parts

1 26NA 6173 2 LENS COVER C 1 a-V121 0306 03b-V118 0320 03c-V121 0304 04d-V123 0306 03e-V118 0306 03f-V111 0206 03g-V121 0308 03

2 40LA 6114 0 MOUNTING PLATE D 1

3 56AA 8553 1 APS SENSOR 2 B 1

4 26NA 6181 2 WIRING GUIDE PLATE 1 D 1

5 26NA 6228 0 WIRING HOLD PART 1 D 1

6 A0R5 2654 00 Auxiliary Plate /C D 1

7 A0R5 2653 00 Auxiliary Plate /B D 1

8 A0R5 2657 00 Auxiliary Plate /D D 1

9 26TA 6251 0 FIXING SEAL C 1

10 26TA 8452 1 NOISE FILTER /1 C 111 50GA -626 1 CCD UNIT I 1

12 40LA 6174 1 SCREW FIXING PLATE D 2

13 26NA 6245 1 EARTH SPRING 3 D 2

14 26NA 6216 0 GLASS HOLDING PLATE C 1

15 56UA 9792 0 HIGE VOLTAGE CAUTION LABEL C 1

16 A0R5 2650 00 Mounting Plate /A D 1

17 9334 2610 12 REED SWITCH C 1

18 A0R5 1389 01 Label D 1

19 A0R5 1388 00 Plate D 1

20 A0R5 H030 00 I/F BOARD/H ASSY C 1

21 9373 2200 11 LOUDSPEAKER D 1

Page. 8

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OPTICS UNIT

P 9

PS30PS31

L1 INVB

SDB

M2

See Page.62

1

b

aa

a

d

2

3

6

5

4

b

ac

8 10

9

7

a

11

ea

a 17

12

aa

15

18

16

19

14

13

a

20

21

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OPTICS UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 R707 00 ORIGINAL TABLE GLASS ASSY C 1 a-V121 0306 03b-V121 0304 04c-V118 0310 03d-V123 0306 03e-V123 0308 03

2 50GA 6252 0 ADF CONNECTOR /1 D 1

3 50GA 6111 0 ADF MOUNTING PLATE /LEFT D 1

4 26NA 6130 0 GLASS HOLDER PLATE FRONT C 1

5 50GA -628 0 ORIGINAL TABLE GLASS ASSY 2 C 1

6 26NA 6115 0 GLASS HOLDER PLATE REAR C 1

7 56AA 8551 1 PHOTO SENSOR B 1

8 9335 1300 61 PHOTO INTERRUPTER B 1

9 40LA 6201 0 WIRING GUIDE PART 3 D 1

10 50GA 6214 0 MOUNTING PLATE /2 D 111 50GA 6251 0E Board Mounting Plate /No.1 D 1

12 40LA 8351 3 LAMP STARTER B 1

13 50GA -905 0 SCANNER DRIVE BOAD ASSY I 1

14 50GA 6112 0 ADF MOUNTING PLATE /RIGHT D 1

15 50GA 6211 0 WIRING GUIDE PLATE 2 D 1

16 40LA 6116 1E Motor Mounting Plate D 1

17 50GA 8002 0 SCANNER DRIVE MOTOR C 1

18 40LA 6246 0 MOTOR TENSION SPRING 1 C 1

19 50GA 6259 0 WIRING HOLDING PART /2 D 1

20 50GA 6212 0 WIRING GUIDE PLATE 3 D 1

21 50GA 6258 0 WIRING HOLDING PART /1 D 1

Page. 9

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OPTICS UNIT

P 10

BB

L1

L1 RLB,

,

,

1f 

a2

2

22

a

h

3

4

i

5

a

a

8

78

6

79 10

9 10

9 10

6

11

13

4

g

ig

12

i

14

m

16

b

g

2

a

30

31

31

32

32

30

a2

2

2

aa

20

19

b

g

me

22

18

h

k

15

23

21

224

17

h

24 d

db

2526

n

b25

28d

d

c

24

29

27

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OPTICS UNITKey Part No. Description Destinations Class QTY Standard parts

1 26NA R711 00 MIRROR MOUNT PLATE 2 ASSY D 1 a-V217 0400 50b-V217 0600 50c-V233 3018 50d-V193 0406 04e-V121 0304 03f-V118 0310 03g-V123 0306 03h-V123 0308 03i-V226 0300 50k-V151 0306 03m-V118 0303 03

n-V121 0304 04

2 26NA 6194 0 BEARING C 8

3 26NA 6156 0 OPTICS SLIDE PLATE FRONT D 1

4 26NA 6138 0 SLIDE PART D 3

5 26NA 6153 1 MIRROR SUPPORT PLATE FRONT D 1

6 26NA 6161 0 MIRROR PRESSURE SPRING 4 C 2

7 26NA 6154 0 OPTICS MIRROR 2 C 2

8 26NA 6160 0 MIRROR PRESSURE SPRING 3 C 2

9 26TA 6252 1 MIRROR REINFORCE PART 1 D 3

10 26TA 6253 0 STICKING PART1 D 3

11 26NA 6239 1 MIRROR SUPPORT PLATE REAR D 1

12 26NA 6155 1 OPTICS SLIDE PLATE REAR D 1

13 26NA 6159 0 WIRING GUIDE PART 2 D 1

14 26NA 6137 0 REFLECT MIRROR C 1

15 40LA 8301 1 EXPOSURE LAMP A 1

16 50GA 6122 0 OPTICAL WIRE FRONT C 1

17 26NA 6131 0 MIRROR MOUNT PLATE 1 C 1

18 26NA 6206 0 MIRROR ADJUSTING SCREW D 1

19 40LA 6121 0 OPTICS WIRE REAR C 1

20 26NA -951 2E POWERING BOARD ASSY C 1

21 26NA 6134 0 OPTICS MIRROR 1 C 1

22 26NA 6141 0 MIRROR PRESSURE SPRING B 2

23 26NA 6139 0 WIRING GUIDE PART 1 D 1

24 50GA 6120 0 WIRE DRIVE PULLEY C 2

25 56QA 7507 0 BEARING/8 C 2

26 26NA 6175 1 PULLEY FIXED PLATE D 1

27 40LA 6193 0 MOTOR BELT 160L C 1

28 40LA 6192 0 DRIVING PULLEY 55T C 129 40LA 6119 0 DRIVE SHAFT D 1

30 40LA 6183 0 OPTICS SLIDE SHEET 1 D 2

31 26NA 6184 0 OPTICS SLIDE SHEET 2 C 2

32 26NA 6232 0 READING SEAL/7 D 2

Page. 10

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WRITE UNIT

P 11

INDEXB

a

1

2

3

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WRITE UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 R700 00 Write Unit B 1 a-V151 0308 03

2 26NA -909 2E INDEX ASSY I 1

3 40LA 6526 0 WRITING CLEANER KNOB C 1

Page. 11

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DRIVING UNIT

P 12

M1

M11

e

e

b

b

b

a

a

b

db

c

c

e

cb

c

b

a

b

dg

b

bbb

2

1

3

3

4

3

5 6  6

6

15   14

17

1920

26

22

21

24

25

23

27

16

18

13

1211

12

10

9

87

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DRIVING UNITKey Part No. Description Destinations Class QTY Standard parts

1 27LA 8003 2E DC BRUSHLESS MOTOR/30 C 1 a-V121 0304 03b-V217 0400 50c-V237 2012 50d-V121 0306 03e-V217 0600 50f-V123 0306 03g-V123 0408 03

2 A0R5 M103 00 DC Brushless motor /30 C 1

3 26NA 1728 0 BALL BEARING C 3

4 50GA 1566 0 DRIVE PULLEY UPPER 40T C 1

5 50GA 1550 0 GEAR A 100T 30T C 1

6 1900 4141 0 PLYSLIDER 6 C 3

7 50GA 1552 0 GEAR C 102T 35T C 1

8 50GA 1856 0 CONVEYANCE GEAR A 50T 27T C 1

9 50GA 1857 0 CONVEYANCE GEAR B 41T 27T C 1

10 50GA 1858 0E CONVEYANCE GEAR /C 31T C 1

11 50GA 1506 0 DRIVE PANEL /F D 1

12 4660 7602 0 PAPER FEED SHAFT HOLDER B 2

13 50GA -183 0 SHAFT ASSY D 1

14 50GA 1553 0 GEAR D 45T C 1

15 50GA 1554 0 GEAR E 35T C 1

16 50GA 1561 0E GEAR /I 31T C 1

17 50GA 1522 0E Idling Shaft /B D 1

18 50GA -157 0 RU DRIVE ASSY C 1

19 26NA R710 00 TENSION PLATE CAULKING D 1

20 50GA 1545 0 TENSION SPRING C 1

21 26NA 5037 0 IDLER PULLEY 18T C 1

22 26NA 5359 0 BALL BEARING A 1

23 50GA 1565 0 DEVELOPING DRIVE PULLEY LOWER 45T C 1

24 50GA 2104 00 Stopper Plate D 1

25 50GA 1541 0 BELT 296L C 1

26 50GA 1547 0 DRIVE PANEL /I D 1

27 50GA -189 0 DRUM ROTATION PLATE ASSY C 1

Page. 12

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DRIVING UNITP 13

M9

ee

a

e   f 

g

g

d

c

eb

b

e

g

b

8

718

65

7

20

24

26

27

23

25

16

10

11

12

17

9

2

1

3

4

19

21

22

1413

15

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DRIVING UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 M103 00 DC Brushless motor /30 C 1 a-V121 0304 03b-V121 0306 03c-V221 0300 50d-V217 0300 50e-V217 0400 50f-V217 0600 50g-V237 2012 50

2 50GA -155 0 DUMPER PLATE ASSY C 1

3 26NA R702 00 DRIVE PLATE COMBINED C 1

4 26NA 1560 0 DRUM DRIVING GEAR 108T C 1

5 1900 4141 0 PLYSLIDER 6 C 1

6 50GA 1551 0 GEAR B 105T C 1

7 4660 7602 0 PAPER FEED SHAFT HOLDER B 2

8 50GA -160 1E CAULKING ASSY D 1

9 50GA 1518 1E Agitating Shaft D 1

10 50GA 1560 0 GEAR H 19T 26T C 1

11 50GA 1556 0 AGITATING GEAR UPPER 17T 30T C 1

12 50GA 1559 0 GEAR G 22T C 1

13 50GA 1563 0 GEAR K 23T C 1

14 50GA 1564 0 GEAR L 28T C 1

15 50GA 1562 0 GEAR J 21T C 1

16 50GA 1555 0 COLLECTION GEAR 20T C 1

17 50GA 1557 0 AGITATING GEAR 21T C 1

18 50GA 1503 0 DRIVE PANEL /C D 1

19 26NA 1728 0 BALL BEARING C 1

20 26NA 5359 0 BALL BEARING A 1

21 26NA 1758 0 AGITATING COUPLING B C 1

22 50GA -159 0 DRUM DRIVE ASSY C 1

23 50GA 1548 0 PRESSING PART D 1

24 26NA 1520 0 COUPLING SPRING B 1

25 50GA -154 0 SHAFT ASSY D 1

26 26NA 3087 0 SPRING SPACER C 1

27 50GA -153 0 DRUM INPUT SHAFT ASSY C 1

Page. 13

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DRIVING UNIT

P 14

b

b

c

c

b

d

b

a

b

b

9

8

4

7

3

2

1

5

4

6

6

4

16

17

18

4

4

4

14

1415

19

13

12

11

10

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DRIVING UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 1605 0 PAPER FEED PROTECTION PANEL D 1 a-9735 0306 14b-V121 0306 03c-V217 0400 50d-V217 0600 50

2 50GA 1613 0 PAPER FEED GEAR C 38T C 1

3 50GA 1619 1 ADU INPUT GEAR 49T 28T C 1

4 1900 4141 0 PLYSLIDER 6 C 6

5 50GA 1611 0 PAPER FEED GEAR A 32T C 1

6 1900 4142 0 POLYSLIDER 8 C 2

7 50GA 1612 0 PAPER FEED GEAR B 27T C 1

8 50GA 4569 1E CONVEYANCE EARTH PLATE D 1

9 50GA -164 1F CAULKING ASSY D 1

10 50GA -168 0E CAULKING ASSY D 1

11 50GA 1616 0 PAPER FEED GEAR F 21T 23T C 1

12 50GA 1617 0 PAPER FEED GEAR G 26T 19T C 1

13 50GA -165 0E CAULKING ASSY D 1

14 50GA 2501 00 SPACER C 2

15 50GA 1620 0E PAPER FEED GEAR /I 20T C 1

16 50GA 1614 0E PAPER FEED GEAR /D 19T C 1

17 50GA 1618 0F PAPER FEED GEAR /H 28T C 1

18 50GA -167 0F CAULKING ASSY D 1

19 50GA 1610 0 PAPER FEED DRIVE GEAR 62T 29T C 1

Page. 14

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DRIVING UNIT

P 15

M3

e

d

b

a

d

b

b

b

d

c

e

6  2

8

7

9

11

4

2

5

16

13

17

15

12

143

1

10

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DRIVING UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 M103 00 DC Brushless motor /30 C 1 a-V121 0304 03b-V121 0306 03c-V221 0400 50d-V217 0400 50e-V237 2012 50

2 26NA 1728 0 BALL BEARING C 2

3 50GA -171 0 CAULKING ASSY D 1

4 40LA 1754 0 DEVELOPING DRIVE GEAR 6 32T C 1

5 40LA 1755 0 DEVELOPING DRIVE GEAR 7 39T C 1

6 50GA -173 0E CAULKING ASSY D 1

7 13QA 1033 0 SHAFT SPACER C 1

8 50GA 1760 1E Developing Drive Shaft D 1

9 40LA 1756 0 DEVELOPING INPUT COUPLING A C 1

10 26NA 1757 0 DEVELOPING INPUT COUPLING B C 1

11 26NA 1759 0 SPACER B C 1

12 50GA 1703 0 DUST PROOF COVER C 1

13 50GA -172 0 CAULKING ASSY D 1

14 50GA 1752 0 DEVELOPING DRIVE GEAR 2 27T B 1

15 50GA 1753 0 DEVELOPING DRIVE GEAR 3 25T 28T B 1

16 50GA 1751 0 DEVELOPING DRIVE GEAR 1 52T 26T B 1

17 1900 4141 0 PLYSLIDER 6 C 1

Page. 15

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DRIVING UNIT

P 16

CL4

h

h

e

e

e

c

b

b

a

e

d

ee

g

e

e

e

e

h

hh

hk

k

i

i

3

9

10

8

5

4

1

17

18

15

16

19

20

20

14

22

2325

29

27

27

26

26

2124

11

12

13

7

77

7

7

7

7

7

6

2

33

34

35

32   31

28

30

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DRIVING UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 1851 0 FIXING GEAR A 80T B 1 a-9646 0306 13b-9646 0306 14c-9646 0308 14d-9721 0400 01e-4425 3001 01f-9735 0306 14g-9743 0408 14h-V121 0306 03i-V217 0400 50k-V237 2012 50

2 50GA 1509 1 DRIVE PRESSING STAY D 1

3 50GA -186 1G CAULKING ASSY C 1

4 50GA 1811 1G FIXING INPUT SHAFT C 1

5 50GA 1852 3I Fixing Gear/B 18T B 1

6 26NA 1728 0 BALL BEARING C 1

7 40LA 1740 0 DRIVING SPACER 1 C 8

8 50GA 1853 2G Fixing Gear/C 19T B 1

9 50GA 1841 0 FIXING SWING SPRING C 1

10 50GA 1822 0D Fixing Idling Shaft C 1

11 50GA 1843 0 FIXING PRESSING SPRING C 112 50GA 1842 0 LEVER PRESSING SPRING D 1

13 50GA 1855 2G Fixing Gear/E 18T B 1

14 50GA 1824 1E Fixing Idling Shaft /2 D 1

15 50GA 1507 0F Drive Panel /G D 1

16 50GA 1859 2G Fixing Gear /F 19T B 1

17 50GA 1854 2G Fixing Gear/D 19T B 1

18 50GA 1504 0E Drive Panel /D D 1

19 4030 3057 01 SHAFT D 1

20 4131 3003 01 BUSHING C 2

21 4030 3067 01 SHAFT D 1

22 4030 3051 01 BRACKET D 1

23 50GA -169 2 LOWER PAPER FEED DRIVE ASSY C 1

24 9322 1500 12 CLUTCH C 1

25 4030 3052 01 BRACKET D 1

26 4030 3055 01 COLLAR C 2

27 4030 3053 01 PULLEY 28/36T C 2

28 1155 2518 01 PULLEY C 129 4030 3054 01 TIMING BELT 324L C 1

30 1067 2513 01 PULLEY C 1

31 4030 R705 00 BRACKET ASSY C 1

32 50GA 1640 1E Paper feed Gear 19T 33T C 1

33 50GA -176 0 PAPER FEED STAKE ASSY D 1

34 4030 3060 01 GEAR 30T C 1

35 4030 3059 01 GEAR 24T C 1

Page. 16

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DRUM CARTRIDGE

P 17

SD2

See Page.64

See P17

P18

P19

P20

a

b

c

c

d

de

g

h

8

9

9

10

10

1

2

34

5

5

6

7

7

7

7

7

77

7

7

777

7 7

1819

20

11

12

13

14

14

15

1516

1617

2122

23

24

24

24

25

25

26

27

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DRUM CARTRIDGEKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9795 1E Toner Indicating Label C 1 a-V121 0304 04b-V121 0308 03c-V121 0306 03d-V118 0306 03e-V151 0308 03f-V217 0400 50g-V121 0310 04h-V233 2012 50

2 26NA 2134 0 DRUM ROTARY PART C 1

3 50GA 2035 0E CARTRIDGE COVER /FRONT C 1

4 26NA R705 00 SEPARATE SORENOID ASSY C 1

5 26NA 2138 0 SOLENOID SEAL C 2

6 26NA 2024 2 SEPARATE GUIDE PLATE C 1

7 26TA 2032 0 SEPARATE AUXILIARY ROLLER C 14

8 26NA 2027 0 SEPARATE RELEASE LEVER C 1

9 26NA 2030 0 SEPARATE ROCKING COLLAR C 2

10 26NA 2031 0 SEPARATE ROCKING SCREW C 2

11 40AA 2023 0 SEPARATOR RELEASE SPRING C 112 26NA 2029 0 SEPARATE ROCKING SPRING C 1

13 26NA 2142 0 PAPER GUIDE SHEET C C 1

14 26NA 2140 0 PAPER GUIDE SHEET A C 2

15 50GA -218 0 SEPARATING CLAW ASSY C 2

16 40AA 2017 0 SEPARATOR FULCRUM SHAFT C 2

17 26NA 2143 0 PAPER GUIDE SHEET D C 1

18 50GA -200 1 DRUM UNIT B 1

19 40LA R702 00 DRUM SHAFT ASSY D 1

20 26NA 2136 0 DRUM SUPPORT SHAFT HOLDER C 1

21 40LA 2094 0 DRUM SUPPORT PART C 1

22 26NA 2144 0 CARTRIDGE SCREW C 1

23 26NA R704 00 DEVELOPING ELECTRIFY COMBINED C 1

24 3920 4526 0 ELECTRODE CONNECTING SPRING B C 3

25 40AA 7319 1 CHARGING INPUT SPRING C 2

26 40LA -221 0 CHARGE POWERING /A CAULKING D 1

27 40LA -222 0 CHARGE POWERING /B CAULKING D 1

Page. 17

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DRUM CARTRIDGE

P 18

IDCS

a

a

b

b

c

c

d

e

g

g8

9

1

2

3

4

5

6

7

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DRUM CARTRIDGEKey Part No. Description Destinations Class QTY Standard parts

1 40LA 2167 0 ELECTRODE PRESSING SPRING C 1 a-V151 0310 03b-V151 0312 03c-V121 0306 03d-V121 0304 04e-V123 0306 03f-V121 0304 03g-V151 0308 03

2 26NA 2048 0 DRUM SHAFT HOLDER F C 1

3 26NA 2025 0F Shaft holder Support Part D 1

4 26NA R703 00 BLADE SEAL BLOCK R ASSY B 1

5 26NA R706 00 BLADE SEAL BLOCK 2 ASSY B 1

6 26NA -918 2E TONER DETECTED BOARD ASSY C 1

7 26NA 2095 0 WIRING GUIDE PART D 1

8 26NA 2020 0 TONER GUIDE SHEET C 1

9 26NA 2133 0 MOUNTING SHEET B D 1

Page. 18

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DRUM CARTRIDGE

P 19

a

a

b

b

c

d

e

g

g

h

h

i

i

i

8

9

10

1 2

3

4

5

6

7

18

19

19

19

20

1112

13

14

15

16

16

17

21

22

23

23

2425

26

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DRUM CARTRIDGEKey Part No. Description Destinations Class QTY Standard parts

1 26NA 2092 0 SHAFT FIXED PART C 1 a-V121 0306 03b-V151 0310 03c-V217 0400 50d-V147 0308 03e-V217 0200 50f-V151 0308 03g-V221 0300 50h-V217 0250 50i-V217 0300 50

2 26NA 2057 0 SEPARATION ROCKING GEAR 18T C 1

3 40LA 2005 0 ELECTRODE GUIDE PART /FRONT D 1

4 26NA 2076 0D Transfer Power supply Plate C 1

5 26NA 2042 0 IDLER GEAR 25T C 1

6 40LA -215 1 PANEL /FRONT CAULKING D 1

7 26NA 2038 0 ROCKING SHAFT HOLDER C 1

8 50GA -217 0 COLLECTING COVER ASSY D 1

9 26NA 2107 0 COLLECTING SEAL C 1

10 26NA 2037 0D Collection Spring C 1

11 26NA 2086 0D Collection Cover /B C 112 26TA 2088 1 CLEANER FIXING PART D 1

13 26NA 2087 0 CLEANER AUXILIARY PART C 1

14 50GA -205 0 SCREW GUIDE PART/REAR ASSY C 1

15 26TA 2053 1 SCREW GUIDE PART /REAR D 1

16 26TA 2154 0 RECYCLING SHAFT HOLDER C 2

17 26TA -235 0 RECYCLING SHAFT/1 ASSY D 1

18 26TA -236 0 RECYCLING SHAFT/2 ASSY D 1

19 26NA 2128 0 SCREW SHAFT HOLDER B C 3

20 26TA 2161 1 SPEWING PV SHEET B C 1

21 26TA R701 00 COLLECT COVER C ASSY D 1

22 26TA -237 1 DRIVE SUPPORT PANEL/1 CAULKING D 1

23 26TA 2149 0 TONER CONVEYANCE GEAR 4 13T C 2

24 26TA 2148 0 TONER CONVEYANCE GEAR 3 16T C 1

25 26TA 2147 0 TONER CONVEYANCE GEAR 2 18T C 1

26 26TA 2146 0 TONER CONVEYANCE GEAR 1 19T C 1

Page. 19

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DRUM CARTRIDGE

P 20

a

b

b

c

d

e

e

e

e

89

9

9

101

1

2

3 4

5

6

7

11

12

13

13

14

15 16

17bizhub 421

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DRUM CARTRIDGEKey Part No. Description Destinations Class QTY Standard parts

1 40LA 2019 0 BLADE PRESSURE SPRING C 2 a-V121 0304 04b-V118 0304 03c-V111 0202 03d-V151 0308 03e-V217 0300 50f-V151 0312 03

2 40LA 2036 0E Cartridge Reinforce Part D 1

3 50GA 2007 0 TONER COLLECTION SCREW D 1

4 26NA 2058 0 SEPARATION ROCKING CAM C 1

5 40LA 2034 0D Cartridge Rail D 1

6 26TA 2151 0 AGITATOR PLATE A D 1

7 26NA 2022 0 CLEANER COLLECT SEAL C 1

8 26NA 2116 0 SHAFT HOLDER SPACER C 1

9 26NA 2014 0 SCREW SHAFT HOLDER C 3

10 26NA 2056 0 TONER COLLECT COUPLING B 1

11 26NA 2055 3 TONER AGITATE SHAFT D 112 50GA -209 0 DRUM CLEANING BLADE ASSY A 1

13 26NA 2071 0 FELT A C 2

14 26NA 2016 0 SCREW GEAR 24T C 1

15 26NA 2017 0 AGITATING GEAR 19T 30T C 1

16 40LA R701 00 BLADE SEAL BLOCK F ASSY B 1

17 40LA R703 00 BLADE SEAL BLOCK 1 ASSY B 1

Page. 20

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CHARGING UNIT

P 21

EL

 A

 A

b

a

b

b

8

8

9

9

10

1

2

3

4

5

6

7

11

1112

13

1415

16

17

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CHARGING UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA -250 0 CHARGE CORONA UNIT B 1 a-V226 0300 50b-V151 0306 032 25HA 2510 0 SHAFT STOPPER PART B 1

3 40LA 2519 0 CHARGE CLEANIG KNOB C 1

4 40LA 2501 1 CHARGING BLOCK REAR C 1

5 40LA 2505 0 SPARK ARRESTER PREVENTIVE PLATE REAR B 1

6 40LA 2516 0 CHARGING CONTROL PLATE B 1

7 40LA R704 00 CHARGING CLEANING ASSY C 1

8 50GA 2506 0 CHARGING WIRE C 2

9 26NA 2518 0 CHARGING SPRING B 2

10 40LA 2507 0 CHARGING ELECTRODE PLATE C 1

11 26NA 2517 0 WIRE TENSION SPRING B 212 40LA 2504 0 SPARK ARRESTER PREVENTIVE PLATE FRONT B 1

13 40LA 2502 0 CHARGING BLOCK FRONT C 1

14 26NA 4549 0 LIFTING SPRING 2 C 1

15 40LA 2520 0 CHARGING CLEANING HANDLE C 1

16 50GA -251 0 CHARGE DISCHARGING PLATE ASSY C 1

17 50GA 2509 0 CHARGING CLEANING SHAFT C 1

Page. 21

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TRANSFER SEPARATOR CORONA UNIT

P 22

a

a

b

c8

9

910

1

2

3

3

4

4

5

5

6

7

11

12

13

bizhub 421

S S O CO O 22

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TRANSFER SEPARATOR CORONA UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA -260 0 TRANSFER SEPARATING CORONA UNIT A 1 a-V151 0308 03b-V123 0306 03c-V145 2606 03

2 50GA 2619 1E SEPARATION BRIDGE C 1

3 26NA 2608 0 DISCHARGE WIRE A 2

4 56AA 1783 0 TRANSFER HOLDING RUBBER A 2

5 26NA 2623 0 WIRE TENSION SPRING B 2

6 50GA 2607 0F SPARK PREVENTING PLATE /REAR C 1

7 50GA 2604 0 TRANSFER SEPARATOR BLOCK REAR C 1

8 50GA -261 0 TRANSFER GUIDE PLATE ASSY C 1

9 26NA 7325 1 ELECTRODE CONNECTING SPRING A B 2

10 50GA -262 0 TRANSFER SEPARATOR BLOCK FRONT ASSY C 1

11 26NA 2625 0 ELECTRODE PLATE D 112 26NA 2626 0 ELECTRODE SPRING B 1

13 50GA 2606 0E SPARK PREVENTING PLATE /FRONT C 1

Page. 22

DEVELOPING UNIT

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DEVELOPING UNIT

P 23

TCRS

See Page.64

a b

c

c

8

9

10

1

2

3

4

5

5

5

5

6

6

7

7

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DEVELOPING UNIT P 23

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DEVELOPING UNITKey Part No. Description Destinations Class QTY Standard parts

1 26NA 3049 0 DEVELOPING ELECTRODE COVER D 1 a-V121 0306 03b-V118 0306 03c-V151 0306 03

2 26NA 3047 0 DEVELOPING ELECTRODE STAY D 1

3 26NA R708 00 DEVELOPING COVER PART A ASSY C 1

4 26NA 3072 0 SCATTER PREVENTING SHEET 4 C 1

5 50GA 3161 0 DEVELOPING SUCTION SEAL C C 4

6 50GA 3160 0 DEVELOPING SUCTION SEAL B C 2

7 50GA 3157 0 SCATTER PREVENTING SHEET /A C 2

8 26NA 3045 0 SCATTER PREVENTING SHEET 3 C 1

9 0294 2064 0 L DETECTING SEAL C 1

10 26NA 8804 1 TONER DENSITY SENSOR B 1

Page. 23

DEVELOPING UNIT

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DEVELOPING UNIT

P 24

See P23- ALL

P24- ALL

b

b

c

c

c

cc

c

c

d

e

gg

h

ii

m

m

m

m

k

89

10

1

1

2

22

3

3

3

3

3

3

4

4

4

4

4

4

5

6

7

a

18

19

11

12

1314

15

16

17

27

28

29

20

20

21

22

23

242526

303132

bizhub 421

DEVELOPING UNIT Page 24

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DEVELOPING UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 3015 0 AGITATING GEAR B 20T B 2 a-V121 0306 04b-V217 0500 50c-V217 0400 50d-V217 0300 50e-V221 0300 50f-V151 0306 03g-V217 0600 50h-V207 0600 03i-V123 0306 03k-V151 0308 03m-V121 0306 03

2 4660 7801 0 PIN A D2X10 B 3

3 26NA 3085 0 SHAFT HOLDER SPACER C 6

4 26NA 3077 0 DEVELOPING SHAFT HOLDER B 6

5 26NA 3094 0 DEVELOPING SEAL S C 1

6 50GA 3014 0 AGITATING GEAR A 22T B 1

7 26TA R702 00 DEVELOPING COVER ASSY C 1

8 26NA 3009 0 DEVELOPING COVER PART /B D 1

9 26NA 3096 0 SPACER C C 1

10 26NA 3095 0 AGITATE COUPLING A C 1

11 26NA 3073 0 AGITATE COUPLING B 112 26NA R707 00 DEVELOPING COVER PART C ASSY D 1

13 26NA 3070 0 DEVELOPING GEAR C 1

14 1136 2060 0 PIN A C 1

15 26NA 3066 0 BALL BEARING C 1

16 26NA 3065 0 DEVELOPING SHAFT HOLDER REAR C 1

17 26NA 3044 0 SPEWING PREVENTIVE SHEET 2 D 1

18 50GA -300 1 DEVELOPING UNIT B 1

19 26NA 3084 0 DEVELOPING BLOCK D 1

20 50GA 3018 0 IDLING GEAR 2 15T B 2

21 26NA 2136 0 DRUM SUPPORT SHAFT HOLDER C 1

22 26NA 3036 0 DEVELOPING CONNECTING PLATE D 1

23 26NA 3063 0 DEVELOPING SHAFT HOLDER FRONT C 1

24 26NA 3021 1G Magnet Adjusting Plate D 1

25 26NA 3086 0 SHAFT HOLDER FULCRUM PART C 1

26 50GA 3017 0 IDLING GEAR 1 15T B 1

27 26NA 3093 0 DEVELOPING SUPPORT STOPPER D 1

28 26NA 3075 0 DEVELOPING ADJUSTING CAM FRONT D 1

29 50GA -307 0E DEVELOPING STAY CAULKING D 1

30 26NA 3101 0 POSITIONING SCREW C 1

31 50GA -304 0 DEVELOPING COVER ASSY C 1

32 56UA 9792 0 HIGE VOLTAGE CAUTION LABEL C 1

Page. 24

TONER SUPPLY UNIT

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TONER SUPPLY UNIT

P 25

M4

M10

SD5

1

d

b

b

a

e

4

2

3

c

5

5

c

6

12

a

11

e

10e

8e

  7

9

13

14

15

16

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TONER SUPPLY UNIT Page 25

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TONER SUPPLY UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA -322 1 TONER SUPPLY MAIN/UPPER ASSY C 1 a-V217 0500 50b-V121 0304 03c-V122 0304 03d-V151 0306 03e-V217 0400 50f-V217 0300 50

2 50GA 3271 0 LOCK ARM C 1

3 50GA 3272 0 LOCK SPRING C 1

4 26NA 3268 0 TONER CONVEYANCE GEAR 5 16T 23T C 1

5 26NA 8006 1 TONER SUPPLY MOTOR B 2

6 26NA 3266 0 TONER SUPPLY SHAFT HOLDER C 1

7 26TA 3258 0 TONER SUPPLY REGULATING GEAR 18T C 1

8 26TA 3264 0 TONER SUPPLY GEAR 2 16T 51T C 1

9 50GA -323 0 TONER CONVEYING DRIVE ASSY C 1

10 26TA 3261 0 TONER SUPPLY GEAR 1 23T 51T C 1

11 26NA 8251 3 PAPER FEED SOLENOID C 112 26NA 3259 0 TONER SUPPLY REGULATING GEAR 42T C 1

13 26NA 3294 0 TONER SUPPLY SEAL 4 D 1

14 26NA 3242 0 TONER SUPPLY SEAL/REAR C 1

15 26NA 3295 0 TONER SUPPLY HOLDING SEAL /A C 1

16 26NA 3231 1E TONER SUPPLY HOLDING MAIN BODY D 1

Page. 25

TONER SUPPLY UNIT

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TONER SUPPLY UNIT

P 26

PZS

See P25- ALL

P26- ALL

229

3

4

a

a

5

a8

67

15

9 1011

b

1614

12

13

a

15

17

18

19 b

a24

23

a22

21

25

28

27

26

1

20

c

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TONER SUPPLY UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA -320 1 TONER SUPPLY UNIT I 1 a-V217 0400 50b-V151 0308 03c-V221 0400 50

2 50GA 3252 0 TONER CONVEYANCE GEAR 3 20T 25T C 1

3 50GA 3323 0E TONER SUPPLY DRIVE CAM C 1

4 50GA 3270 0 STOPPER SPRING C 1

5 50GA 3253 0 TONER CONVEYANCE GEAR 4 27T C 1

6 25HA 3215 2 TONER CONVEYANCE SHAFT HOLDER A C 1

7 26NA 3296 0 FELT C C 1

8 50GA 3251 0 TONER SUPPLY REGULATING GEAR 21T C 1

9 26NA 3256 0 TONER AGITATE SHAFT HOLDER LEFT C 1

10 40LA 3227 0 SCREW SEAL PART MIDDLE D 1

11 50GA 3322 0 SPRING REGULATING PART A C 112 40LA R706 00 AGITATE SCREW ASSY D 1

13 26NA 3297 0 PIN C 1

14 26NA 3204 0 TONER SUPPLY SCREW C 1

15 26NA 3293 0 TONER SUPPLY SEAL 3 C 2

16 26NA 3291 0 TONER SUPPLY SEAL 1 C 1

17 26NA 3292 0 TONER SUPPLY SEAL 2 C 1

18 26TA 3301 0 TONER AGITATE SHEET FRONT C 1

19 40AA 8803 1 LEVEL DETECTION SENSOR C 1

20 50GA 3208 0 TONER SUPPLY OPEN CLOSE PLATE D 1

21 26NA 3228 0 SCREW SEAL PART UPPER C 1

22 26NA 3254 0 TONER AGITATE SHAFT HOLDER C 1

23 26NA 3220 0 SCREW SEAL PART LOWER C 1

24 26NA 3255 0 TONER AGITATE SHAFT HOLDER RIGHT C 1

25 26NA 3209 0 TONER SUPPLY OPEN CLOSE SPRING B 1

26 26NA 3290 0 SPEWING PREVENTIVE SPACER C 1

27 26NA 3230 0 TONER SUPPLY OPEN CLOSE SHEET C 1

28 26NA 3243 0 TONER SUPPLY OPEN CLOSE COVER C 1

29 26NA 3269 0 TONER AGITATING SHAFT /2 D 1

Page. 26

TONER SUPPLY UNIT

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TONER SUPPLY UNIT

P 27

1

13

12

11

14

a

a

10

7

6

6

b

9 8

d

c3

4

3

2

e

e

5

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TONER SUPPLY UNIT Page 27

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TONER SUPPLY UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA -332 1 TONER CARTRIDGE PRESSING ASSY C 1 a-V217 0300 50b-V151 0308 03c-00Z6 1042 1d-V151 0410 03e-V121 0306 03

2 26TA 3296 0 CARTRIDGE REGULATING PLATE C 1

3 26TA 3297 0 CARTRIDGE REGULATING SPRING C 2

4 26TA 3299 0 COVER PART C 1

5 50GA -334 1 TONER SUPPLY GUIDE PART ASSY C 1

6 26TA 3298 0 CARTRIDGE PRESSING SPRING 3 C 2

7 50GA -333 0 PRESSING ASSY C 1

8 50GA 3285 1 CARTRIDGE PRESSING HANDLE C 1

9 26NA 3287 0 CARTRIDGE PRESSING SPRING 2 C 1

10 50GA 3312 0 CARTRIDGE PRESSING HANDLE B C 1

11 50GA 3282 2F Cartridge Pressing Pedestal C 112 50GA 3311 0 TONER SUPPLY SUPPORT SHAFT D 1

13 50GA 3326 0 TONER SUPPLY OPEN CLOSE SPRING C 1

14 50GA 3310 0 TONER SUPPLY SUPPORT PLATE D 1

Page. 27

TONER SUPPLY UNIT

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TONER SUPPLY UNIT

P 28

2

a

a

1

6 bb

5

8

8

4

c

c

3

7

11

10

9

11

10

9

7

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TONER SUPPLY UNIT Page. 28

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TONER SUPPLY UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 3308 0E TONER SUPPLY PULLING LEVER C 1 a-V151 0308 03b-V118 0304 03c-V121 0306 03

2 50GA 3210 2I Toner supply Guide Plate /Lower C 1

3 50GA 3318 2 TONER SUPPLY AUXILIARY COVER B C 1

4 50GA 3315 2F Toner supply Index Part A C 1

4 50GE 3315 2F Toner supply Index Part B,G2 C 1

4 50GF 3315 2F Toner supply Index Part C,D1,D3,E,F2,G1,I,K C 1

5 50GA 3306 0E TONER SUPPLY AUXILIARY COVER C 1

6 50GA 3309 1E LEVER MOUNTING PLATE C 1

7 50GA 3304 0 TONER SUPPLY GUIDE RAIL /MIDDL D 2

8 50GA 3319 0 MOUNTING PLATE /A D 2

9 50GA -337 0 MOUNTING PART /A ASSY C 210 50GA 3321 0 REGULATING SEAL A C 2

11 50GA 3332 0 SCATTER PREVENTING SEAL B C 2

Page. 28

TONER SUPPLY UNIT

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TONER SUPPLY UNIT

P 29

PS4

PS28

See Page.65

1

2

3b

a

b

3

b4

5

5

b

6

8

7

9

a

a

a

11

10

13

12

aa

b

a

16

14

15

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TONER SUPPLY UNIT Page. 29

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Key Part No. Description Destinations Class QTY Standard parts

1 50GA 3303 0 TONER SUPPLY GUIDE RAIL/LEFT D 1 a-V121 0304 03b-V151 0308 032 50GA 3324 0 CORD MOUNTING PLATE/1 D 1

3 9335 1300 61 PHOTO INTERRUPTER B 2

4 50GA 3307 1 MOUNTING PLATE C 1

5 50GA 3317 0E SLIDE SPRING /A C 2

6 50GA 3223 0 DETECTION ACTUATOR C 1

7 4470 4024 01 STOPPER D 1

8 50GA 3316 1E MOUNTING PLATE /B C 1

9 50GA 3333 0 SCATTER PREVENTING SEAL C C 1

10 50GA 3314 0 RAIL/LEFT D 1

11 50GA 3325 0 TONER SUPPLY EARTH PLATE 1 C 112 50GA 3302 0 TONER SUPPLY GUIDE RAIL/RIGHT D 1

13 50GA 3313 0 COOLING COVER E C 1

14 50GA -336 0 FILTER MOUNTING PLATE ASSY A 1

15 50GA 3305 0E TONER SUPPLY PROTECTION PART D 1

16 50GA 3211 1F TONER SUPPLY GUIDE PLATE /UPPER C 1

g

DEVELOPING SUCTION UNIT

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P 30

a

a

b

c

d

e

e

1

2

3

4

5

6

6

7

7

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DEVELOPING SUCTION UNIT Page. 30

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Key Part No. Description Destinations Class QTY Standard parts

1 A0R5 R701 00 Filter Cover ASSY A 1 a-V121 0306 03b-V151 0308 03c-V137 0308 03d-V144 0306 03e-V144 0308 03

2 40LA R705 00 SUCTION FILTER A ASSY A 1

3 50GA -313 0 SUCTION COVER 6 ASSY D 1

4 50GA -315 0 FAN COVER ASSY D 1

5 50GA -316 0 SUCTION COVER 1 ASSY D 1

6 50GA -319 0 SUCTION COVER 8 ASSY D 2

7 50GA -311 0 SUCTION COVER 2 ASSY A 2

g

PAPER FEED UNIT

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P 31

PS5PS6

1

2

3

30

4

5

6

28

25

24

2322

6

21

20

18

27

19e

1729 8

7

6

6

1314

13

14

15

16

78

912

276

b

c

d

b

c

c

e

c

26

a

ad

c

c

c

11

10

26

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PAPER FEED UNIT Page. 31

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Key Part No. Description Destinations Class QTY Standard parts

1 4030 3087 01 REINFORCE PLATE D 1 a-9735 0308 14b-9735 0306 14c-4425 3001 01d-4425 3002 01e-9715 0600 01

2 4030 3084 01 REINFORCE PLATE D 1

3 4030 3086 01 REINFORCE PLATE D 1

4 4030 3041 02 FRAME D 1

5 4030 6811 01 WIRE HARNESS ASSY D 1

6 4131 3003 01 BUSHING C 5

7 4030 3005 01 ROLLER A 2

8 4030 3034 01 CLUTCH C 2

9 4425 3016 01 GEAR 32T C 1

10 4030 3002 02 HOLDER D 1

11 4030 3008 01 GEAR 29T C 112 4030 3003 01 SHAFT D 1

13 4030 3036 01 GUIDE C 2

14 4030 3088 01 WEIGHT C 2

15 4030 3023 03 GUIDE PLATE D 1

16 4030 3085 01 COVER C 1

17 4040 3097 01 SHAFT D 1

18 4030 3030 01 TORSION SPRING C 1

19 1065 3086 01 BUSHING C 1

20 4030 3004 01 SHAFT D 1

21 1070 3072 01 PRESSURE SPRING C 1

22 1052 4412 01 JOINT C 1

23 4040 3096 01 SHAFT D 1

24 4030 3011 03 LEVER C 1

25 4030 3012 01 TORSION SPRING C 1

26 4037 0906 01 PHOTO INTERRUPTER B 2

27 1067 2501 01 PIN C 2

28 4030 3001 03 FRAME D 1

29 4425 3013 01 GEAR 30T C 130 4030 3016 12 ACTUATOR C 1

PAPER FEED UNIT

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P 32

1

1

2

22

5

35

216

18

7

17

15

9

4

8

k

h

e

ce

b

d

b

a

a

10

11

16

12

13

13

b

14

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23

23

23

23

23

23

23

23

23

1920

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PAPER FEED UNIT Page. 32

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Key Part No. Description Destinations Class QTY Standard parts

1 4030 3108 01 GUIDE C 2 a-9735 0308 14b-9735 0306 14c-9743 0308 14d-4425 3001 01e-4425 3002 01f-9646 0308 14g-9739 0308 14h-1066 1151 01k-9646 0306 14

2 4030 3032 03 GUIDE D 1

3 50GA 4001 0 ROLLER GUIDE SHEET C 1

4 4030 3078 01 LEVER C 1

5 4030 3125 01 TENSION SPRING C 2

6 4030 3017 03 PRESSURE SPRING C 1

7 4030 3014 01 BRACKET D 1

8 4030 3080 01 GUIDE C 1

9 4030 3079 01 GUIDE C 1

10 4030 3026 02 GUIDE D 1

11 4030 3027 02 GUIDE D 112 4030 3037 01 REINFORCE PLATE D 1

13 26NA 2030 0 SEPARATE ROCKING COLLAR C 2

14 4030 3025 02 BRACKET D 1

15 4030 0151 01 SEPARATION ROLLER ASSY A 1

16 4030 3077 01 GUIDE D 1

17 4030 3013 01 HOLDER D 1

18 4030 3039 01 SHAFT D 1

19 4040 5610 00 Spacer D 1

20 4040 5612 00 Spacer D 1

21 50GA 4003 0 ROLLER MOUNTING PLATE UPPER D 1

22 50GA 4002 0 PAPER FEED ROLLER SHAFT C 1

23 4658 3513 01 ROLLER C 9

PAPER FEED UNIT

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P 33

PS7

PS12

PS13

PS2

CL5

CL3

P33- ALL

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12

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39

35

34

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31

301

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10

9

11

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29

27

28

12

1314

15

12

16

1217

14

20

1321

2212

23

24

25

22

2633

3 318

45

6

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aa

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PAPER FEED UNIT Page. 33

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Key Part No. Description Destinations Class QTY Standard parts

1 4030 3112 02 GUIDE PLATE D 1 a-4425 3001 01b-4425 3002 01c-9735 0306 14d-9721 0400 01e-1066 1151 01

2 4131 3532 02 BUSHING C 1

3 4037 0906 01 PHOTO INTERRUPTER B 4

4 4030 3128 01 BRACKET D 1

5 4030 3042 02 FRAME D 1

6 4030 3018 01 BRACKET D 1

7 1200 5212 04 PIN D 1

8 4030 3031 01 TORSION SPRING C 1

9 4030 3019 02 ACTUATOR C 1

10 1134 3041 01 COLLAR D 1

11 4030 3016 12 ACTUATOR C 1

12 4131 3003 01 BUSHING C 5

13 4030 3005 01 ROLLER A 2

14 4030 3034 01 CLUTCH C 2

15 4425 3013 01 GEAR 30T C 1

16 4030 3002 02 HOLDER D 1

17 4030 3008 01 GEAR 29T C 1

18 50GA 4005 0 PAPER FEED SHAFT HOLDER C 1

19 50GA 8202 0 CONVEYANCE CLUTCH C 1

20 4425 3016 01 GEAR 32T C 1

21 4030 3003 01 SHAFT D 1

22 1067 2501 01 PIN C 2

23 4040 3097 01 SHAFT D 1

24 4030 3030 01 TORSION SPRING C 1

25 1065 3086 01 BUSHING C 1

26 4030 3022 01 SHAFT D 1

27 4030 3011 03 LEVER C 1

28 4030 3012 01 TORSION SPRING C 1

29 4040 3096 01 SHAFT D 130 9322 1500 12 CLUTCH C 1

31 4030 3092 01 WASHER D 1

32 4030 3064 01 GEAR 33T C 1

33 4030 3069 01 SLEEVE D 1

34 4030 3068 01 GEAR 26T C 1

35 4030 3063 01 BRACKET D 1

36 4030 3021 01 ROLLER C 1

37 4030 3010 02 FRAME C 1

38 50GA -400 0 LOWER PAPER ASSY S 1

39 50GA -402 0 FRAME ASSY D 1

PAPER FEED UNIT

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P 34

 A

B

a

bd

c

d

8

75

9

32

10

11

6

4

b

ea

b

12

13

14

1516

17

14

a

g

a

18

19

18

a

20

g

g

22

21

2524

29

2827

23

g

26

26

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30

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32

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1

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PAPER FEED UNIT Page. 34

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Key Part No. Description Destinations Class QTY Standard parts

1 A0R5 5611 00 Door C 1 a-9735 0306 14b-9743 0308 14c-4425 3001 01d-4425 3002 01e-9646 0308 14f-9735 0308 14g-9739 0308 14

2 4030 3079 01 GUIDE C 1

3 4030 3078 01 LEVER C 1

4 4040 5612 00 Spacer D 1

5 4030 3017 03 PRESSURE SPRING C 1

6 4040 5610 00 Spacer D 1

7 4030 3014 01 BRACKET D 1

8 4030 3039 01 SHAFT D 1

9 4030 3013 01 HOLDER D 1

10 4030 3077 01 GUIDE D 1

11 4030 0151 01 SEPARATION ROLLER ASSY A 1

12 4030 3105 01 GUIDE C 1

13 4030 3124 03 GUIDE D 1

14 4030 3125 01 TENSION SPRING C 2

15 4030 3129 03 BRACKET D 1

16 4030 3037 01 REINFORCE PLATE D 1

17 4030 3025 02 BRACKET D 1

18 4030 3036 01 GUIDE C 2

19 4030 3095 01 GUIDE PLATE C 1

20 50GA 4007 00 FILM C 1

21 50GA 4006 00 CUSHION C 1

22 4030 3107 01 GUIDE C 1

23 4030 3114 02 GUIDE PLATE D 1

24 4030 3116 01 TENSION SPRING C 1

25 4030 3135 01 LEVER C 1

26 4163 5293 01 SCREW C 3

27 4030 3117 02 BRACKET D 1

28 A0R5 5630 00 Handle C 1

29 1149 3454 01 PRESSURE SPRING C 130 4030 3115 01 LEVER C 1

31 4030 3134 03 EARTH GROUND C 1

32 4030 3123 01 PRESSURE SPRING C 2

33 4030 3122 01 ROLL C 4

34 4030 3121 01 SHAFT D 1

MANUAL FEED UNIT

P 35

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P 35

See P35- ALL

P36- ALL

P37- A

1

2

b

b

c

c

3

3

4

4

5

6

7

b

b

b

22

23

24

24

25

26

27

21

c

e

a

17

18

19

20

16

17

18

d 9

10

11

8

1212

13

1415

bizhub 421

MANUAL FEED UNITKe Part No Description Destinations Class QTY Standard parts

Page. 35

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Key Part No. Description Destinations Class QTY Standard parts

1 A0R5 6009 00 Lifting Plate D 1 a-V144 0308 03b-V153 0308 03c-V137 0308 03d-V218 0300 86e-V116 0306 03

2 4687 3281 01 FRICTION SHEET C 1

3 4030 3477 01 SEAL C 2

4 4030 3476 01 SEAL C 2

5 4030 3456 01 REINFORCE PLATE D 1

6 4030 3484 01 WEIGHT D 1

7 A0R5 6025 00 Holder D 1

8 4034 0151 01 SEPARATION ROLLER A 1

9 4131 3053 02 HOLDER D 1

10 4030 3404 01 BRACKET D 1

11 4030 3475 01 PRESSURE SPRING C 1

12 4030 3492 01 SPACER C 2

13 4030 3474 01 BRACKET D 1

14 4030 3402 01 GUIDE PLATE C 1

15 4030 3403 01 GUIDE C 1

16 4030 3489 01 SEAL C 1

17 4030 3428 01 TENSION SPRING C 2

18 4030 3457 03 PRESSURE SPRING C 2

19 4030 3424 01 BRACKET D 1

20 4030 3448 01 CUSHION C 1

21 A0R5 6042 00 Cover /Upper D 1

22 A0R5 9421 01 Label C 1

23 4030 3438 01 TENSION SPRING C 1

24 4030 3481 01 COLLAR C 2

25 4040 3496 01 GUIDE D 1

26 4040 3495 01 GUIDE C 1

27 A0R5 R703 00 Multi Bypath UNIT A C 1

27 A0R5 R704 00 Multi Bypath UNIT B,G2 C 1

27 A0R5 R705 00 Multi Bypath UNIT C,D1,D3,E,F2,G1,I,K C 1

MANUAL FEED UNIT

P 36

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P 36

CL6

SD1

PS23

PS18

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1

2

3

4

56

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d

d

17

17

35

36

33

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34

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19

30

31

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322526

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29

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2021

18

22

23

d

de

g

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910

11

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1213

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16

17

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MANUAL FEED UNITKey Part No Description Destinations Class QTY Standard parts

Page. 36

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bizhub 421

Key Part No. Description Destinations Class QTY Standard parts

1 4030 3429 02 MEMBER D 1 a-V153 0308 03b-V137 0306 03c-V137 0308 03d-V218 0400 86e-V217 0600 01f-V218 0600 86g-V217 0400 01h-V136 0308 03i-V144 0308 03

2 4030 3479 01 BRACKET D 1

3 4037 0906 01 PHOTO INTERRUPTER B 2

4 4030 3434 01 SHAFT D 1

5 4030 3441 01 GEAR 20/25T C 1

6 4030 R708 00 BRACKET ASSY D 1

7 1075 2565 01 GEAR 25T C 1

8 4658 3517 01 BUSHING C 1

9 4030 3467 01 GEAR 16/30T C 1

10 9J06 M201 00 CLUTCH C 1

11 4030 3478 02 SHIELD PLATE D 1

12 4131 4128 01 WASHER C 1

13 4131 3007 02 DRUM D 1

14 4030 3420 02 RATCHET C 1

15 4030 3419 01 TORSION SPRING B 1

16 4131 3004 02 GEAR 30T C 1

17 4030 3093 01 BUSHING C 3

18 4030 3430 01 LEVER C 2

19 4030 R707 00 BRACKET ASSY C 1

20 4030 3422 01 HOLDER D 1

21 9J06 M200 00 SOLENOID C 1

22 4030 3401 13 HOLDER D 1

23 4030 3427 01 REINFORCE PLATE D 1

24 1300 3322 17 GEAR 20T C 1

25 4030 3417 01 CAM C 2

26 1067 2502 01 PIN D 2

27 4030 3464 01 HOLDER D 1

28 4030 3447 01 GUIDE C 1

29 4030 3444 01 ACTUATOR C 130 4030 3445 01 TORSION SPRING C 1

31 4030 3465 01 HOLDER D 1

32 4040 3443 01 BRACKET D 1

33 4040 3497 01 CUSHION C 1

34 4030 3416 02 SHAFT D 1

35 4030 3432 07 BRACKET C 1

36 4131 3001 01 ROLLER A 1

MANUAL FEED UNIT

P 37

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P 37

PS19

PS20 PS22

VR1

PS21

 Aa

a

a

a

b

b

b

b

b

b

bc

d

e

e

e

8

9

10

12

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5

5

6

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1818

18

20

20

20

20

30

2211

12

13

14

16

15

19

19

19

19

17

21

21

21

21

17

17

17

23

24

25

2627

28

29

bizhub 421

MANUAL FEED UNITKey Part No. Description Destinations Class QTY Standard parts

Page. 37

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Key Part No. Description Destinations Class QTY Standard parts

1 4030 3486 01 BRAKE C 1 a-V137 0308 03b-V153 0308 03c-V116 0306 03d-V137 0306 03e-V137 0308 04

2 A0R5 6010 00 Regulating Plate C 1

3 4030 3487 01 BRAKE C 1

4 A0R5 6011 00 Regulating Plate C 1

5 4131 4623 04 CLEANING PAD C 2

6 A0R5 6066 00 Cover C 1

7 4030 3412 01 GEAR 13/18T C 1

8 4030 3460 02 RACK C 1

9 4030 0216 05 BRACKET ASSY D 1

10 4030 3463 01 STOPPER D 1

11 4030 3455 02 BRACKET D 1

12 4037 6899 01 RESISTOR D 1

13 4030 3436 01 TORSION SPRING C 1

14 4030 3472 01 HOLDER D 1

15 9326 1910 31 FERRITE CORE D 1

16 A0R5 6026 00 Cover C 1

17 4030 3446 01 TORSION SPRING C 4

18 4030 3415 02 ACTUATOR C 4

19 4030 3414 01 BRACKET D 4

20 1134 3042 02 SHAFT D 4

21 4037 0906 01 PHOTO INTERRUPTER B 4

22 A0R5 6023 00 Tray C 1

23 A0R5 6059 00 Cover C 1

24 A0R5 9430 00 Label C 1

25 A0R5 6008 00 Tray C 1

26 4030 3473 02 HOLDER D 1

27 4030 3435 01 TORSION SPRING C 1

28 4030 3437 01 BRACKET D 1

29 A0R5 6108 01 Cover /Front C 130 4030 7306 02 SCALE METRIC A C 1

30 4030 7308 02 SCALE INCH B,G2 C 1

30 4030 7307 02 SCALE METRIC C,D1,D3,E,F2,G1,I,K D 1

REGISTRATION UNIT

P 38

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P 38

PS1

CL1

CL2

1

2

3

5

6

a

b

b

c

c

d

d

e

9

10

1112

13

14

15

16

1718

18

18

19

20

20

21

21

22

g

h

23

23

24

2518

17

12

7

8

4

bizhub 421

REGISTRATION UNITKey Part No. Description Destinations Class QTY Standard parts

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y p p

1 50GA -380 1 REGISTRATION ASSY C 1 a-V145 0308 03b-V217 0400 50c-V217 0500 50d-V217 0600 50e-V151 0308 03f-V144 0306 03g-V123 0306 03h-V121 0314 03

2 50GA -382 0 REGISTRATION CLEANER ASSY C 1

3 50GA 3875 0D Regist Dust-proof Part C 1

4 50GA 3870 0E Transfer Guide Sheet C 1

5 50GA 3854 1F Regist Main body D 1

6 50GA 3858 1F Paper feed Regulating Sheet C 1

7 13QA 8552 1 SENSOR 2 B 1

8 50GA 3869 1F Paper feed Regulating Sheet /Middle C 1

9 50GA 3849 0 REGISTRATION ROLLER B C 1

10 50GA 3848 0 REGISTRATION ROLLER A B 1

11 50GA 3865 0E PAPER FEED CONNECTING ROLLER B 1

12 26NA 4082 0 PAPER FEED SLIDE BUSHING B 2

13 50GA 3879 0 REGIST GUIDE SHEET FRONT C 1

14 50GA 3861 0 REJIST GUIDE SHEET REAR C 1

15 50GA 3868 0E Regist Guide Plate D 1

16 50GA 9749 0E Drum Caution Label D 1

17 13QA 7602 1 SHAFT HOLDER 2 C 2

18 12QV 4066 0 SHAFT POSITIONING PART C 4

19 57AA 8203 0 CONVEYANCE DRIVE CLUTCH C 1

20 26NA 4537 1 REGISTRATION UNIT SHAFT HOLDER /2 B 2

21 26NA 4536 0 REGISTRATION UNIT SHAFT HOLDER /1 B 2

22 50GA 8202 0 CONVEYANCE CLUTCH C 1

23 26NA 4514 1 REGISTRATION UNIT SPRING B 2

24 50GA 3867 0E REGIST SUPPORT PANEL /REAR D 1

25 50GA 3813 0 REGIST SUPPORT PANEL FRONT D 1

TURNOVER UNIT

P 39

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P 39

FM9

FM3

SD3

PS27

M6

a

6

6

b

b

b

9

9

c

c

11

d

e

f 16

g

g

g

14

15

h

8

8

10

10

10

10

12

1

2

3

4

5

5

5

5

20

7

13

17

18

19

21

23

22

bizhub 421

TURNOVER UNITKey Part No. Description Destinations Class QTY Standard parts

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1 A0R5 8704 00 Cover C 1 a-V153 0310 03b-V136 0308 03c-V153 0306 03d-V135 0308 03e-V116 0306 03f-V137 0306 03g-V121 0306 03h-V218 0400 86

2 50GA 4406 0 PAPER EXIT SUCTION FILTER A 1

3 A0R5 8705 00 Cover /Right C 1

4 4040 3833 02 NEUTRALIZING BRUSH D 1

5 4011 5852 02 SHOULDER SCREW C 4

6 4498 3388 01 COLLAR C 2

7 A0R5 8820 00 Cover /Upper D 1

8 A0R5 8711 00 Cover D 2

9 9313 1100 33 FAN MOTOR C 2

10 50GA 4407 0 PAPER EXIT SEAL /1 C 4

11 9314 1200 91 MOTOR C 1

12 4030 3810 01 TENSION SPRING C 113 4030 3809 01 LEVER C 1

14 1200 2105 02 COLLAR D 1

15 9321 2200 32 SOLENOID C 1

16 4030 0207 04 BRACKET ASSY D 1

17 4002 3779 01 PIN D 1

18 4030 3821 01 GEAR C 1

19 4030 3834 01 EARTH GROUND C 1

20 A0R5 8703 00 Guide Part D 1

21 50GA 4402 0 MOUNTING STAY /RIGHT D 1

22 4037 0906 01 PHOTO INTERRUPTER B 1

23 50GA 4410 0E Paper exit Panel /Front D 1

TURNOVER UNIT

P 40

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P 40

a

a

b

b

b

b

b

8

9

1

1

2

3

4

5

5

5

5

6

6

6

6

7

1011

12

bizhub 421

TURNOVER UNITKey Part No. Description Destinations Class QTY Standard parts

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1 1139 3169 01 BUSHING C 2 a-V218 0400 86b-V137 0306 032 50GA 8601 00 Paper exit Roller /1 C 1

3 4131 2536 02 PIN C 1

4 4030 3826 01 GEAR C 1

5 4426 4411 02 ROLL C 4

6 4030 3817 01 PLATE SPRING C 4

7 4030 3807 03 GUIDE D 1

8 4030 3823 01 BUSHING D 1

9 4030 3818 02 ACTUATOR C 1

10 4030 3819 01 TORSION SPRING C 1

11 4030 3805 02 GUIDE D 1

12 4030 3808 01 TORSION SPRING C 1

CONVEYANCE UNIT

P 41TSL

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TSL

a

a

a

aa

bb

b

b

c c

c

c

c

8

8

9

10

10

1

1

1

2

3

45

6

7

18

19

19

20

11

11

12

13

14

15

16

17

21

2223

24

25

26

27

bizhub 421

CONVEYANCE UNITKey Part No. Description Destinations Class QTY Standard parts

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1 26NA 4552 0 STICKING PART C 3 a-V121 0306 03b-V111 0304 03c-V151 0308 03

2 50GA 4571 0 PTL LIGHT BLOCKING SHEET C 1

3 50GA -913 0 PTL I 1

4 50GA 4522 1 OPEN CLOSE LEVER 1 C 1

5 50GA 4533 0 LOCK SPRING 2 C 1

6 50GA 4535 1 CONVEYANCE HANDLE C 1

7 50GA 4521 0D Conveyance Open/close Shaft D 1

8 50GA 4553 0 CONVEYANCE COVER SHEET C 2

9 50GA 4508 0 LIFTING PLATE D 1

10 26NA 4507 1 LIFT UP SPRING C 2

11 26NA 4549 0 LIFTING SPRING 2 C 2

12 50GA 4575 0 CONVEYANCE COVER PART 5 D 113 50GA 4574 0 CONVEYANCE COVER PART 4 D 1

14 50GA 4573 0 CONVEYANCE COVER PART 3 D 1

15 50GA 4558 0 CONVEYANCE COVER PART 1 D 1

16 50GA 4559 0 CONVEYANCE COVER PART 2 D 1

17 50GA 4532 0 LOCK SPRING 1 C 1

18 50GA 4531 1 OPEN CLOSE LEVER 2 C 1

19 26NA 4538 1 STOPPER PLATE D 2

20 50GA 4539 0 CORD COVER D 1

21 50GA 4528 0 CONVEYANCE SUPPORT PLATE /2 D 1

22 50GA -450 0 CONVEYANCE UNIT C 1

23 50GA -452 0 CONVEYANCE COVER ASSY D 1

24 56UA 9792 0 HIGE VOLTAGE CAUTION LABEL C 1

25 50GA 4565 0 EARTH SHAFT 1 D 1

26 50GA 4527 0 CONVEYANCE SUPPORT PLATE 1 D 1

27 50GA 4509 0 EARTH PLATE D 1

CASSETTE

P 42

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a

b

b

b

b

b

c

d

ef 

g

h

h

i

8

9

10

1

2

3

4

5

6

7

7

18

19 6

2011

12

1314

15

16

17

28

29

30

21

22

23

24

2526

26

27

383940

4131

32

33

34

35

36

37

42

43

44

45

4647

bizhub 421

CASSETTEKey Part No. Description Destinations Class QTY Standard parts

1 4128 3823 01 LEVER C 1 4425 3002 01

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1 4128 3823 01 LEVER C 1 a-4425 3002 01b-V153 0308 03c-V217 0600 01d-V232 3025 09e-V116 0308 03f-V137 0310 03g-V217 0300 01h-V153 0410 03i-V144 0406 03

2 4037 3204 01 KNOB C 1

3 4030 3217 01 SHAFT D 1

4 4498 3825 01 PRESSURE SPRING C 1

5 4498 3826 01 SHAFT D 1

6 4658 3048 01 GUIDE C 2

7 4658 3049 01 STOPPER C 2

8 4030 3211 02 REGULATING PLATE C 1

9 50GA 4009 00 REGULATING PART /B D 1

10 50GA 4008 00 REGULATING PART /A D 1

11 4030 3228 12 GUIDE C 1

12 4030 3201 09 Cassette D 113 4030 3227 01 GUIDE C 1

14 4037 3213 12 REGULATING PLATE C 1

15 4498 3469 01 STOPPER D 1

16 4030 3203 01 LIFTING PLATE C 1

17 A00J 6234 00 FRICTION PLATE C 1

18 A0R5 A620 02 CASSETTE ASSY S 1

19 4030 3212 01 REGULATING PLATE C 1

20 4002 7306 01 LABEL CARRYING CAPACITY C 1

21 4030 3214 02 SHOULDER SCREW C 1

22 4030 3215 01 GUIDE D 1

23 4658 3012 01 GEAR 14T C 1

24 4030 3222 03 GUIDE C 1

25 4030 3207 01 ACTUATOR C 1

26 4011 3021 01 WASHER C 2

27 4011 3020 01 WASHER C 1

28 4030 3223 03 Earth ground C 1

29 1274 3603 01 BUSHING C 130 4030 3226 01 FRICTION SHEET C 1

31 4030 3229 02 REINFORCE PLATE D 1

32 4030 3216 01 BRACKET D 1

33 4030 3218 01 BRACKET D 1

34 4030 3206 01 LEVER D 1

35 4030 3205 01 SHAFT D 1

36 0992 3014 01 BUSHING C 1

37 4002 3108 01 LEVER C 1

38 4030 6214 00 Stopper C 1

39 4030 6215 00 Plate nut C 1

40 A0R5 6221 00 Detecting Lever C 1

41 4030 3224 02 SHOULDER SCREW C 1

42 A0R5 6299 00 Seal C 1

43 A02E 9412 00 Label Paper Supply C 1

44 A0R5 1641 00 Cover C 1

45 A0R5 1651 00 Cover /Right C 1

46 A0R5 9435 01 Label B,G2 C 1

47 A0R5 9434 01 Label A,C,D1,D3,E,F2,G1,I,K C 1

 AUTO DUPLEX UNIT

P 43SEE P45

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SEE P45

SEE P47,48

SEE P44

1

a

a

a

a

5

67 8

57

43

2

10

12

9

11b

1415

17

16

13

519

20

5

18

21

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 5031 0 ADU DRIVE MAIN BODY D 1 a 9739 0308 14

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1 50GA 5031 0 ADU DRIVE MAIN BODY D 1 a-9739 0308 14b-4425 3001 012 50GA 5012 0 ADU SUPPORT PLATE D 1

3 4030 3726 01 GEAR C 1

4 4030 3713 01 GEAR C 1

5 4030 3749 01 COLLAR C 4

6 50GA 5016 0 ADU DRIVE BELT UPPER 213L C 1

7 4030 3748 01 PULLEY C 2

8 A0R5 8137 00 Drive Cover C 1

9 50GA -519 0 DRIVE PLATE/1 CAULKING C 1

10 4030 3710 01 SHOULDER SCREW C 1

11 4030 3733 03 TORSION SPRING C 1

12 50GA 5061 00 ROTATION SPACER C 113 50GA -520 0 DRIVE PLATE 2CAULKING C 1

14 4030 3725 01 GEAR C 1

15 4030 3734 01 EARTH GROUND C 1

16 50GA 5058 00 INPUT GEAR /1 C 1

17 50GA 5033 0 ADU DRIVE PLATE /2 D 1

18 4657 3714 01 ROLL C 1

19 4030 3744 01 PULLEY C 1

20 50GA 5017 0 ADU DRIVE BELT LOWER 312L C 1

21 4030 3745 01 PULLEY C 1

 AUTO DUPLEX UNIT

P 44

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a

1

b

2

c

3

45

6

4

4

6

4

4

64

6

54

4

c

7

8

9

9

10

e

141316

17

d15

11

12

5

5

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 4030 3703 01 GUIDE D 1 a-9739 0308 14

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1 4030 3703 01 GUIDE D 1 a 9739 0308 14b-V211 0400 80c-V126 0410 03d-V151 0306 03e-V217 0400 50f-V118 0304 03

2 A0R5 8129 00 Main body C 1

3 4030 3735 01 EARTH GROUND C 1

4 50GA 5001 0 SHAFT ROLLER PART C 8

5 4497 3114 01 MEMBER C 4

6 4497 3116 01 ROLL C 4

7 50GA 5035 0 ADU EARTH PLATE 2 C 1

8 A0R5 8251 00 Lever C 1

9 4030 3755 01 PRESSURE SPRING C 2

10 A0R5 8130 00 Cover C 1

11 A0R5 9421 01 Label C 1

12 4661 3106 01 PRESSURE SPRING C 113 4661 3150 01 PIN D 1

14 4661 3155 01 WASHER D 1

15 50GA 5057 0 REINFORCE PLATE /2 D 1

16 50GA 5055 0 REINFORCE PLATE /1 D 1

17 50GA -521 0 DOOR HINGE C 1

 AUTO DUPLEX UNIT

P 4512

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1

2

12

a

a

12

3

4

9

5

6

7

8

3

11

10

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 8136 00 Entrance Guide C 1 a-4425 3001 01

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2 A0R5 9428 00 Label C 1

3 1134 3041 01 COLLAR D 2

4 4030 3811 01 GUIDE D 1

5 4030 3812 01 GUIDE D 1

6 4030 3813 01 GUIDE D 1

7 4030 3814 01 GUIDE D 1

8 4030 3829 01 SHAFT D 1

9 4030 3806 02 GUIDE D 1

10 4030 3825 02 TORSION SPRING C 1

11 4030 3824 01 TORSION SPRING C 1

12 4011 5852 02 SHOULDER SCREW C 2

 AUTO DUPLEX UNIT

P 46

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DETAIL A

DETAIL B

DETAIL C

 A

B

C

D

E

DETAIL E

DETAIL D

PS24PS26

CL7

CL8

PS25

2 a

1

4

6

a

3 2

a

4

22

10

8

b

7

b

7

b

b

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b9

11

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5b9

13

14

4

12

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15

b

7

21a

18

20

19

18

18

20

19

18

1716

7

b

b

a

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 A0R5 8206 00 Guide /Upper C 1 a-9739 0308 14

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b-4425 3001 012 4030 3760 01 GUIDE C 2

3 4030 3739 01 BRACKET D 1

4 9335 1300 61 PHOTO INTERRUPTER B 3

5 4030 3738 03 TORSION SPRING C 1

6 4030 3737 01 ACTUATOR C 1

7 0928 3033 01 BUSHING C 6

8 4030 3707 01 ROLLER C 1

9 50GA 8203 0 ADU CLUTCH C 2

10 4030 3708 01 ROLLER C 1

11 4030 3743 02 GEAR C 1

12 4030 3742 01 BRACKET D 113 4030 3741 03 TORSION SPRING C 1

14 4030 3740 01 ACTUATOR C 1

15 4030 3709 01 ROLLER C 1

16 4030 3750 01 PULLEY C 1

17 4030 3749 01 COLLAR C 1

18 50GA 5001 0 SHAFT ROLLER PART C 4

19 4497 3114 01 MEMBER C 2

20 4497 3116 01 ROLL C 2

21 A0R5 8138 00 Paper exit Guide C 1

22 50GA 5041 0 FIXING PLATE D 1

 AUTO DUPLEX UNIT

P 479

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FM5

 A

B

 A

B

b

32

1

b

4

c

a

5

7

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b

8

10

16

11

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15e

14b

b

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b

21

19

1617

16

20

1816

17

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 5053 0 HV CASING C 1 a-V121 0306 03b 9739 0308 14G O S S G C

Page. 47

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b-9739 0308 14c-V151 0312 03d-V217 0400 50e-V207 0400 03f-V123 0314 03

2 50GA 5047 0E HV POWER SUPPLY SPRING C 1

3 50GA -513 0 SHAFT SUPPORTING PLATE C 1

4 50GA 5051 0 TRANSFER POWER SUPPLY PLATE C 1

5 50GA 5056 0E Conveyance Guide Sheet C 1

6 50GA 5049 0 CONVEYANCE CONNECTING PLATE D 1

7 50GA 5010 0 DUCT CONNECTING PART D 1

8 A0R5 8102 00 Cover C 1

9 50GA 5048 0 DUCT SUPPLY PLATE D 1

10 50GA 5011 0 ADU CONNECTING SHAFT D 1

11 50GA 5003 0 DUCT COVER PLATE D 1

12 9313 1100 33 FAN MOTOR C 113 50GA 5007 0 CONVEYANCE SUPPORT PLATE D 1

14 50GA 4570 0 CONVEYANCE PRESSING PART C 2

15 50GA 4572 0 CONVEYANCE PRESSING SPRING C 2

16 25AA 7553 0 SLIDE SHAFT HOLDER C 4

17 26NA 4256 0 BY PASS FEED DRIVEN ROLLER C 2

18 50GA 5040 0 PAPER FEED CONVEYANCE SPRING C 1

19 50GA 5006 0 ADU PAPER EXIT PLATE D 1

20 50GA 5008 0 PAPER FEED IDLER SHAFT D 1

21 50GA 5043 0 ADU SUPPORT SHAFT D 1

 AUTO DUPLEX UNIT

P 482

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a

2

1

a

a

a

d

6

5

4

3

a

a

8

7

c

1110

9

b

b

14

13

13

12

bizhub 421

 AUTO DUPLEX UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA 5028 0 FIXING COVER PLATE D 1 a-9739 0308 14b-9735 0306 142 50GA 5045 0 FIXING PRESSING SPRING C 2

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b-9735 0306 14c-V127 0306 03d-9732 0308 14

2 50GA 5045 0 FIXING PRESSING SPRING C 2

3 50GA 5004 1F ADU DOOR /REAR C 1

4 40AA 3229 0 MAGNET CATCH C 1

5 50GA 5027 0 ADU EARTH PLATE 1 C 1

6 4030 2022 01 PAWL C 1

7 50GA 9746 0 HIGH TEMP CAUTION LABEL C 1

8 4030 2023 01 BRACKET D 1

9 50GA 5062 00 LOCK SPRING C 1

10 A0R5 8221 00 Lock Claw /Front C 1

11 A0R5 8105 00 Door /Front C 1

12 50GA 5009 0 ADU REINFORCE PLATE D 113 50GA 5014 0 BELT REINFORCE PLATE D 2

14 50GA 5015 0 ADU OPEN CLOSE BELT C 1

FIXING UNIT

P 49a

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L2

L3

1

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bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 50GA M33A 00 FIXING HEATER /2 A I 1 a-V121 0304 03b-V122 0306 031 50GE 8303 1 FIXING HEATER 2 B G2 I 1

Page. 49

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b V122 0306 03c-V217 0400 50d-V123 0306 03

1 50GE 8303 1 FIXING HEATER 2 B,G2 I 1

1 50GF 8303 1 FIXING HEATER 2 C,D1,D3,E,F2,G1,I,K I 1

2 50GA M32A 00 FIXING HEATER /1 A I 1

2 50GE 8302 1 FIXING HEATER 1 B,G2 I 1

2 50GF 8302 1 FIXING HEATER 1 C,D1,D3,E,F2,G1,I,K I 1

3 50GA 5454 0 REINFORCE STAY D 1

4 42GA 5303 0 FIXING ROLLER UPPER A A 1

4 50GA 5303 0 FIXING ROLLER UPPER B,C,D1,D3,E,F2,G1,G2,I,K A 1

5 26NA 5371 2 BALL BEARING A 2

6 26NA 5372 0 HEAT INSULATING SLEEVE A A 2

7 42GA 5406 0 FIXING GEAR 39T A B 17 50GA 5406 0 FIXING GEAR 46T B,C,D1,D3,E,F2,G1,G2,I,K B 1

8 26NA 5362 0 FIXING FIXED PART C 2

9 42GA 5390 0 LAMP SUPPORT PART REAR A C 1

9 50GA 5390 0 LAMP SUPPORT PART REAR B,C,D1,D3,E,F2,G1,G2,I,K C 1

10 50GA 5360 0 PRESSURE SPRING C 2

11 42GA 5308 0 PRESSING ARM /REAR A C 1

11 50GA 5308 0 PRESSING ARM /REAR B,C,D1,D3,E,F2,G1,G2,I,K C 1

12 50GA 5359 0 FIXING BEARING LOWER A 2

13 42GA 5304 0 FIXING ROLLER LOWER A A 1

13 50GA 5304 0 FIXING ROLLER LOWER B,C,D1,D3,E,F2,G1,G2,I,K A 1

14 42GA 5307 0 PRESSING ARM /FRONT A C 1

14 50GA 5307 0 PRESSING ARM /FRONT B,C,D1,D3,E,F2,G1,G2,I,K C 1

15 50GA 5389 0 LAMP SUPPORT PART /FRONT D 1

16 40AA 5347 0 TERMINAL PLATE 1 D 1

17 26NA 5374 0 TERMINAL PLATE A D 1

18 26NA 5423 0 TERMINAL FIXING SCREW C 2

19 26NA 5377 0 TERMINAL PEDESTAL A D 1

FIXING UNIT

P 503

a4 12

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TH1

TH2

TS

See Page.611

1

a

2

a

3

d

ab

d

a ba

7

6

20

19b

b

18

13c

8a 14

13

9

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e

12

9c

3 3

15

17

16

bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 26NA 5403 0 MOUNT SCREW C 2 a-V121 0304 03b-V123 0306 032 50GA 5452 0 ROLLER COOLING DUCT FRONT D 1

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c-V118 0406 03d-V123 0310 03e-V122 0306 03f-V111 0304 03

2 50GA 5452 0 ROLLER COOLING DUCT FRONT D 1

3 26NA 5423 0 TERMINAL FIXING SCREW C 4

4 50GA 5453 0 ROLLER COOLING DUCT REAR D 1

5 42GA 5450 0 CLEANER SUPPORT PART /2 A D 1

5 50GA 5450 0 CLEANER SUPPORT PART /2 B,C,D1,D3,E,F2,G1,G2,I,K D 1

6 50GA -544 0 FIXING SENSOR ASSY A 1

7 50GA 5494 0 COVER PART C 1

8 42GA 5451 0 RELEASE LEVER FRONT A C 1

8 50GA 5451 0 RELEASE LEVER FRONT B,C,D1,D3,E,F2,G1,G2,I,K C 1

9 50GA 5464 0E Lever Insulating Part D 2

10 SP00 -011 2 FUSE MOUNTING PLATE ASSY 26NA 535 A 111 50GA 5442 0 FIXING PRESSING STOPPER D 1

12 42GA 5474 0 RELEASE LEVER REAR A C 1

12 50GA 5474 0 RELEASE LEVER REAR B,C,D1,D3,E,F2,G1,G2,I,K C 1

13 40LA 5443 0 TERMINAL FIXING SCREW 2 C 2

14 50GA 5405 0 WIRING GUIDE PART B D 1

15 50GA 5378 0 TERMINAL PEDESTAL B C 1

16 26NA 5428 0 TERMINAL PLATE D 1

17 26NA 5321 1 WIRING GUIDE PART A D 1

18 50GA 5336 0 FIXING INSULATING SHEET C D 1

19 50GA 5365 1E FIXING ENTRANCE PLATE D 1

20 42GA -548 0 FIXING ENTRANCE PLATE 2 ASSY A C 1

20 50GA -548 0 FIXING ENTRANCE PLATE 2 ASSY B,C,D1,D3,E,F2,G1,G2,I,K C 1

FIXING UNIT

P 51

ca

7121110

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See

P49- ALL

P50- ALL

P51- ALL

P52- ALL

P53- ALL

P54- ALLa

1

c

b

b

b

a

a

7

6

7

4

3

13

95

2

8d

23

18

19

21

22

14

1615

17

20

25

24

e

bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 42GA -530 0 FIXING UNIT A I 1 a-V217 0400 50b-V121 0304 03

V217 0500 501 42GE -530 0 FIXING UNIT B,G2 I 1

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c-V217 0500 50d-V123 0306 03e-V123 0306 03

,

1 42GF -530 0 FIXING UNIT C,D1,D3,E,F2,G1,I,K I 1

2 50GA -543 0 AUXILIARY PART CAULKING D 1

3 1921 4171 0 PAPER LIFT UP LEVER BUSHING B 1

4 4660 7801 0 PIN A D2X10 B 1

5 50GA 5330 0D Cleaner Idling Shaft /A D 1

6 26NA 5346 0 CLEANER GEAR A 18T C 1

7 26NA 5429 0 FIXING DRIVING GEAR D 18T 44T B 2

8 50GA 5429 0 FIXING DRIVE GEAR D 44T 14T B 1

9 50GA 5417 0 AUXILIARY PART D 1

10 26NA 5424 0 LEVER STOPPER PART D 111 26NA 5384 0 FIXING CLEANER SHAFT HOLDER C C 1

12 26NA 5329 0 LEVER SPRING C 1

13 50GA 5404 0 FIXING CLEANING LEVER C 1

14 50GA 5485 0 GEAR REGULATING SHAFT D 1

15 50GA 5484 0 MOUNTING PLATE D 1

16 50GA 7296 00 FUSING SPACER C 1

17 50GA 5483 0D Idling Shaft /D D 1

18 50GA 5493 1E FIXING INPUT GEAR 19T B 1

19 50GA 5473 1E FIXING INPUT GEAR /2 19T B 1

20 50GA -546 1 FIXING INPUT GEAR ASSY A 1

21 4040 5758 01 GEAR /20T C 1

22 50GA 5470 0 FIXING IDLING GEAR B 15T B 1

23 50GA 5469 0 FIXING IDLING GEAR A 14T 20T B 1

24 26NA 5419 0 FIXING GUIDE SCREW C 1

25 26NA 5414 0 NEUTRALIZING BRUSH C 1

FIXING UNIT

P 528

67 413

5

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1 3

2

6

a78

4

5

10

11

9 a

12

13 a

6

a

10

11

9a

12

a

15

14

2018

1918

a

16

17

c

26

27

28

29

25

24

2322

d

d

21

a

32

a

33

31

b

35

34

36a

35

37

a

30

30

bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 4030 5847 01 NETURALIZING MEMBER C 1 a-V151 0308 03b-V123 0308 03c 9739 0308 14

2 4030 5823 01 NEUTRALIZING BRUSH C 1

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c-9739 0308 14d-V151 0308 04

3 4030 5839 03 HOLDER D 1

4 4040 R707 00 EXIT ROLL HOLDER 2 ASSY A 2

5 4030 5858 01 TORSION SPRING C 2

6 4030 5855 01 HOLDER D 2

7 4030 5857 01 SHAFT D 2

8 4030 5854 01 ROLL C 2

9 4030 5856 01 SHAFT D 2

10 4030 5843 02 HOLDER D 2

11 4030 5805 03 ROLL C 2

12 4030 5806 01 TORSION SPRING C 213 4040 R706 00 EXIT ROLL HOLDER 1 ASSY A 2

14 4030 5848 01 POSITIONING PLATE D 1

15 4030 5802 01 ROLLER C 1

16 4030 5812 01 GEAR 21T C 1

17 4030 5840 02 BUSHING C 1

18 4030 5844 02 COLLAR C 2

19 4030 5836 01 GEAR 19T C 1

20 4030 5845 02 SHOULDER SCREW D 1

21 42GA 5482 0 FIXING COVER REAR A C 1

21 50GA 5482 0 FIXING COVER REAR B,C,D1,D3,E,F2,G1,G2,I,K C 1

22 4030 5821 02 TORSION SPRING C 1

23 4030 5820 03 HOLDER D 1

24 4030 5816 01 GEAR 19T C 1

25 4030 5817 02 GEAR 19T C 1

26 4030 5822 03 HOLDER D 1

27 50GA 9748 0E Lever Indicating Label /Rear C 1

28 50GA 9746 0 HIGH TEMP CAUTION LABEL C 1

29 50GA 9747 0E Lever Indicating Label /Front C 1

30 4030 5827 01 SHOULDER SCREW C 2

31 50GA 5487 0 FIXING CASING D 1

32 50GA 5492 0 EARTH PLATE C 1

33 4030 5842 01 BUSHING C 1

34 50GA 5461 1 CLEANER LOCK SHAFT D 1

35 50GA 5462 0 SHAFT SUPPORT PART C 2

36 50GA 5463 0 CLEANER LOCK SPRING C 1

37 50GA 5481 0 FIXING COVER FRONT C 1

FIXING UNIT

P 53

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PS3

4

a3

2

6

5

7

8

1

3

10

10

10

10

11

9

11

9

11

9

11

9

12

12

12

12

12

13

13

13

13

13

1415

b

bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 42GA -533 0 FIXING CLAW ASSY A A 1 a-V151 0308 03b-V217 0300 501 50GA -533 0 FIXING CLAW ASSY B,C,D1,D3,E,F2,G1,G2,I,K A 1

2 42GA 5498 0 SEPARATION SUPPORT PART A D 1

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2 42GA 5498 0 SEPARATION SUPPORT PART A D 1

2 4030 5750 03 BRACKET B,C,D1,D3,E,F2,G1,G2,I,K D 1

3 4030 5827 01 SHOULDER SCREW C 2

4 4030 5808 02 HOLDER D 1

5 4470 4024 01 STOPPER D 1

6 9335 1300 61 PHOTO INTERRUPTER B 1

7 4030 5809 02 ACTUATOR C 1

8 4030 5810 02 TORSION SPRING C 1

9 4030 5856 01 SHAFT D 4

10 50GA 5495 0 ROLLER PRESSING SPRING C 411 4030 5805 03 ROLL C 4

12 4030 5717 01 TENSION SPRING C 5

13 50GA 7227 00 FIXING CLAW C 5

14 4030 5753 01 SHAFT D 1

15 42GA 5486 0E Conveyance Guide Part /Left A D 1

15 50GA 5486 0E CONVEYANCE GUIDE PART /LEFT B,C,D1,D3,E,F2,G1,G2,I,K D 1

FIXING UNIT

P 542

10 c

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1

21

20

2

c 5

b4

a3

2

2

2

6

d

11

12

13

b

9

8

b

717

16

14

9

8

15

19

18

bizhub 421

FIXING UNITKey Part No. Description Destinations Class QTY Standard parts

1 42GA -540 0 FIXING CLEANER ASSY A A 1 a-V121 0306 03b-V217 0400 50c-V151 0306 03

1 50GA -540 0 FIXING CLEANER ASSY B,C,D1,D3,E,F2,G1,G2,I,K A 1

2 27LA 5419 0 FIXING GUIDE SCREW C 5

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c V151 0306 03d-V217 0300 50

2 27LA 5419 0 FIXING GUIDE SCREW C 5

3 50GA 5351 0 FIXING CLEANING BUSHING C 1

4 50GA 5460 0 CLEANER LOCK GEAR C 1

5 40LA R707 00 REGULATING PLATE FRONT ASSY C 1

6 50GA 5343 0 WEB C 1

7 27LA 5383 0 FIXING CLEANER ROLLER B 1

8 26NA 5361 0 CLEANER PRESSURE SPRING B 2

9 26NA 5349 0 FIXING CLEANER SHAFT HOLDER A C 2

10 40LA R708 00 REGULATING PLATE REAR ASSY C 1

11 50GA -556 0 CLEANER DRIVING SHAFT ASSY D 112 26NA 5430 0 FIXING CLEANER SHAFT HOLDER A C 1

13 50GA 5347 0 CLEANER GEAR B 34T B 1

14 4030 5803 01 ROLLER C 1

15 4030 5811 01 BUSHING C 1

16 4030 5841 01 ROLL C 1

17 50GA 5472 1 PROTECTION PART D 1

18 4030 5834 02 BUSHING C 1

19 50GA 5471 0 PAPER EXIT GEAR 18T B 1

20 50GA 5488 0 CONVEYANCE GUIDE PART RIGHT C 1

21 1164 3065 01 STOPPER RING D 1

ELECTRIC PARTS

P 55M7a

5

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M8

PWB/1

PS11

PS10PS8

PS9

PWB/2

PS17

PS16PS14

PS15

7

7

7

7

7

7

7

7

a

bb

b

bb

bb

b

c

c

9

9

10

10

10

10

11

11

11

11

1

1

2

2

3

34

4

5

5

6

6 8

8

12

1213

13

14

14

15

15

16

16

bizhub 421

ELECTRIC PARTSKey Part No. Description Destinations Class QTY Standard parts

1 4011 3012 01 HOLDER D 2 a-V116 0330 03b-V137 0306 03c-V136 0408 03

2 4030 3091 01 LEVER C 2

3 4037 0104 01 PWB ASSY C 2

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3 4037 0104 01 PWB ASSY C 2

4 4030 3047 02 HOLDER D 2

5 4002 3131 01 SHOULDER SCREW C 2

6 4002 3110 01 PRESSURE SPRING C 2

7 4037 0906 01 PHOTO INTERRUPTER B 8

8 9J06 M103 00 MOTOR B 2

9 4030 3208 02 BRACKET D 2

10 4030 3081 01 PRESSURE SPRING C 4

11 4030 3224 02 SHOULDER SCREW C 4

12 4030 3083 01 HOLDER D 213 4030 3048 02 BRACKET D 2

14 4030 3049 01 BRACKET D 2

15 50GA 6271 01 LIFTING STAY C 2

16 4030 3046 03 BRACKET D 2

ELECTRIC PARTS

P 56

b

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DCPS

NF

RL1RL2

HV

MS

HUMS

a

a

a

b

b

b

b

b

c

c

c

d

d

e

8

9

10

12

3

4

56

7

18

19

11

12

13

14

15

16

17

17

bizhub 421

ELECTRIC PARTSKey Part No. Description Destinations Class QTY Standard parts

1 50GA 8451 0 DC POWER SOURCE 1 A,B,G2 I 1 a-V121 0306 03b-V151 0308 03c-V144 0306 03d V137 0306 03

1 50GF 8451 1 DC POWER SOURCE 1 C,D1,D3,E,F2,G1,I,K I 1

2 50GA 8401 0 HIGH VOLTAGE POWER SOURCE I 1

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d-V137 0306 03e-V233 3018 50

2 50GA 8401 0 HIGH VOLTAGE POWER SOURCE I 1

3 50GA 7341 0 HV MOUNTING PEDESTAL D 1

4 50GA 7347 0 WIRING GUIDE PART 1 D 1

5 50GA 7348 1 WIRING GUIDE PART 2 C 1

6 50GA 7349 1 CONTACT PLATE A C 1

7 50GA 7376 1 HV COVER PART C 1

8 65AA 1130 0 SUPPORT PART D 1

9 27LA 8803 1 PROCESS SENSOR B 1

10 50GA 7343 0 WIRING MOUNTING PLATE D 1

11 50GA 7359 0 CORD COVER D 1

12 40AA 8501 1 DOOR SWITCH B 1

13 50GA 7350 0 SWITCH GUIDE PLATE A D 1

14 50GA 7351 0 SWITCH MOUNTING PLATE D 1

15 50GA 7380 0 COVER PLATE D 1

16 50GA -751 0 HIGH VOLTAGE CONNECTING PLATE S ASSY D 1

17 26NA 7325 1 ELECTRODE CONNECTING SPRING A B 2

18 26NA R712 00 HIGH VOLTAGE CONNECTING PLATE B ASSY D 1

19 50GA 7342 0 CONTACT PEDESTAL 1 D 1

ELECTRIC PARTS

P 57

ab

d

81

23

7

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FM6

FM4

CBR1

CBR2

FM1

FM7

FM10

a

d

e

g

g

5

20

c

9

9

9

9

9

9

9

9

10

1010

10

1

1

11

1

1

1

1

1

1

1

1

1

2

2

33

3

4

6

6

18

19

11

12

13

14

15

1617

bizhub 421

ELECTRIC PARTSKey Part No. Description Destinations Class QTY Standard parts

1 26NA 7373 2 DUST PROOFSEAL 5 C 13 a-V118 0406 21b-V208 0400 50c-V151 0335 03d V137 0306 03

2 27LA 7391 0 Dustproof Seal C 3

3 27LA 8051 1 MAIN BODY FAN MOTOR B 4

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d-V137 0306 03e-V123 0306 03f-V121 0306 03g-V151 0308 03

4 50GA 7338 1 POWER SOURCE COOLING DUCT/2 D 1

5 4040 0780 01 POWER CORD A C 1

5 9381 4101 31 POWER CORD B,G2 C 1

5 9381 4101 11 POWER CORD D1,D3,E,F2,G1,I,K D 1

5 9381 4300 41 POWER CORD D1,D3,E,F2,G1,I,K C 1

6 26NA 8846 1 CIRCUIT BLACKER A,B,G2 B 2

6 6852 8604 0 BLACKER C,D1,D3,E,F2,G1,I,K D 2

7 26NA R701 00 POWER SOCKET ASSY D 1

8 50GA 7344 0 CORD MOUNTING PLATE D 1

9 4658 3047 01 COLLAR C 8

10 50GA 7391 0 DUST PROOF FILTER C 4

11 50GA 7337 1 POWER SOURCE COOLING DUCT/1 D 1

12 50GA 1031 0 OZONE FILTER A 1

13 50GA 8052 0 SYSTEM COOLING FAN C 1

14 4030 3523 02 CUSHION C 1

15 4030 3524 01 CUSHION C 1

16 50GA 7346 0E FAN MOUNTING BOARD /REAR D 1

17 50GA 7355 0 DUCT MOUNTING PLATE D 1

18 50GA 7379 0E DRUM COOLING DUCT /2 D 1

19 50GA 7339 0 DRUM COOLING DUCT/1 D 1

20 V590 0400 02 Terminal Cap A D 1

ELECTRIC PARTS

P 58

8

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PRCB

OACB

NRB

a

a

b

b

b

c

cc

c

c

c

d

d

e

9

11

10

1

2

33

4

5

6

7

12

12

13

14

15

16

17

17

18 bizhub 421

ELECTRIC PARTSKey Part No. Description Destinations Class QTY Standard parts

1 50GA 7334 0 BOARD MOUNTING STAY/2 D 1 a-V137 0306 03b-V121 0306 03c-V121 0304 03d-V127 0306 03

2 50GA -902 0E MAIN CONTROL BOARD UNIT I 1

3 5850 9705 0 LABEL SCREW COVER D 2

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d V127 0306 03e-V111 0306 214 50GA 7377 0 BOARD COVER PLATE/C D 1

5 50GA 1360 00 Protection Cover /A D 1

6 A0R5 H010 06 CONTROL BOARD ASSY I 1

7 A0R5 1356 00 Board Cover Plate /A D 1

8 40LA 9736 1 CORD CAUTION LABEL D 1

9 A0R5 1374 00 Board Cover Plate /E D 1

10 V502 0100 54 mini double board post D 1

11 13RN 7312 0 TERMINAL PROTECTION COVER 1 D 1

12 26NA 7357 0 CONTACT FIXING SCREW A C 2

13 A0R5 1361 00 Cover D 1

14 A0R5 1362 00 Cushion C 1

15 40LA 7384 0 CONTACT PROTECTION COVER D 1

16 A0R5 1357 00 Board Cover /B D 1

17 27LA 7399 0 CONTACT PROTECTION SEAL C 2

18 A0R5 1354 00 Board Mounting Plate D 1

WIRING

P 591 5

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J05   CN984

CN01

CN351

CN02

CN14

CN55

CN514

J22

CN982

P1  P2

CN936A

CN936B

CN2201

CN64

PJ26

PJ45

FT132   FT33

6

3

4

2

bizhub 421

WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 26NA 9019 1 TONER SUPPLY WIRING 1 D 1

2 26NA 9035 1 DEVELOPING RELAY WIRING 2 D 1

3 A0R5 N105 00 Scanner Wiring D 1

4 4030 6824 01 WIRE HARNESS ASSY D 1

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4 4030 6824 01 WIRE HARNESS ASSY D 1

5 A0R5 N100 00 Ope.unit Cable C 1

6 A0R5 N101 00 I/O Relay harness D 1

WIRING

P 60

CN61CN44

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J32

CN901

CN900

CN201A

CN201B

J30

J29

J44

J31

J06

J12   J28

J05

CN34

CN27

CN29

CN17CN18

CN11

CN35

CN28

CN38

CN905   CN935

CN903

1

bizhub 421

WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 42GA 9001 0 MAIN BODY WIRING UPPER D 1

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WIRING

P 61

FT22FT21 FT3FT1

1 5

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FT20

J13

J18

FT27

CN980

FT25

FR5

CN10

FR6

J56

J55

J57

FT4FT2

J47CN953

CN919CN62

J17

J14

J25

1

7

9

8

6

5

4

3

2

bizhub 421

WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9004 0 FUSE CORD 1 D 1

2 50GA 9005 1 FIXING POWER SUPPLY WIRING D 1

3 50GA 9011 0E AC Power supply Wiring /1 D 1

4 50GA 9012 0 AC POWER SUPPLY WIRING 2 D 1

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4 50GA 9012 0 AC POWER SUPPLY WIRING 2 D 1

5 50GA 9013 0 AC POWER SUPPLY WIRING 3 D 1

6 50GA 9014 0 FIXING RELAY WIRING 2 D 1

7 50GA 9016 0 OPTICAL RELAY WIRING D 1

8 50GA 9019 0 CONVEYANCE EARTH WIRING D 1

9 50GA 9024 0 DEVELOPING RELAY WIRING D 1

WIRING

P 62

CN96CN930 FT38   FT39

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CN96CN930

J23

J24

J09   CN986

J33CN915

J46   CN951

FT36   FT37

J20   CN200

CN92J11

1

9

8

7

6

5

4

3

2

bizhub 421

WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9026 0 LAMP RELAY WIRING D 1

2 50GA 9027 0 DC INTERLOCK WIRING D 1

3 50GA 9031 0 RELAY WIRING D 1

4 50GA 9032 0E CONVEYANCE SUCTION WIRING D 1

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5 50GA 9037 0 REGISTRATION WIRING D 1

6 50GA 9038 0 HIGH VOLTAGE WIRING 1 D 1

7 50GA 9039 0 HIGH VOLTAGE WIRING 2 D 1

8 50GA 9042 0 OPTION RELAY WIRING D 1

9 26NA 9031 1 RELAY WIRING 1 D 1

WIRING

P 63CN7

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J62   J20

J60

J64

J25

CN300

CN65

CN6

CN5CN3

CN4

CN2

CN1

CN46

CN60

CN11

CN16 CN20   CN21

CN42   CN31

CN500

CN70

J23

1

2

bizhub 421

WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9003 0 DC POWER SOURCE WIRING D 1

2 50GA 9050 0 AD WIRING C 1

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WIRING

P 64

CN919J11

5

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CN913 J30

CN911   J28

CN918

J04

CN939

J07

J16

CN928

CN932

CN983J17

J52

J51

CN904

CN51

J01

CN922

J46

4

3

2

1

7

6

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WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9033 0 INTERNAL COOLING WIRING D 1

2 50GA 9034 0 FIXING COOLING WIRING D 1

3 50GA 9035 0 PAPER FEED RELAY WIRING UPPER D 1

4 40LA 9025 0 DEVELOPMENT WIRING D 1

G

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5 40LA 9007 1 DRUM WIRING D 1

6 40LA 9022 0E POLYGON RELAY WIRING D 1

7 50GA 9030 0 REGISTRATION RELAY WIRING D 1

WIRING

P 65

J21

CN980

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CN954

J13

CN991J44

J21

J06

J12

CN33

CN71

J16

CN916

CN15   CN72

CN914

CN63 CN931

CN981

CN938   J02

CN431

J51

CN432

CN39

J52

J50

1

2

3

4

5

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WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9006 0 FIXING RELAY WIRING D 1

2 50GA 9008 0 DRUM RELAY WIRING D 1

3 50GA 9009 0 OPTICAL WIRING D 1

4 50GA 9029 0 CONVEYANCE RELAY WIRING D 1

5 50GA 9020 0 LD RELAY WIRING D 1

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5 50GA 9020 0 LD RELAY WIRING D 1

WIRING

P 66

CN909CN924

CN917

CN802

CN300

CN19   CN31   CN30 CN32

J15J35

  J10J08

  J03

J39 J54J141

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J27

CN924

CN911

CN22

J39   J54J01

J07J09

J63

J61

J33 J02

CN974

CN927

CN976

CN975

CN928

J30

2

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WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 50GA 9002 0 MAIN BODY WIRING LOWER D 1

2 50GA 9017 1 ADU WIRING D 1

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WIRING

P 67

CN48(CL4)

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PJ15(PC15)

PJ12(PC12)

CN46(BL)(CL2)

(CL4)

CN28

CN27

PJ14(PC14)

PJ43(M8)

PJ17(PC17)

PJ13(PC13)

PJ1I2

PJ25A

PJ26A

PJ16(PC16)

PJ2(PC2) PJ3

(PC3)

1

2

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WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 4030 6812 02 WIRE HARNESS ASSY D 1

2 4030 6813 02 WIRE HARNESS ASSY D 1

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WIRING

P 68

CN32

GND7 CN54

CN71

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CN31

GND8

CN49

PJ29

PJ22

PJ21

PJ20

PJ19

CN71

CN30bPJ18(PC18)

PJ8(PC8)

PJ42(M7)

PJ1 1(PC1 1)

PJ7(PC7)

PJ1I1

PJ24A

PJ23A

PJ10(PC10)

1

2

3

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WIRINGKey Part No. Description Destinations Class QTY Standard parts

1 4030 6814 03 WIRE HARNESS ASSY D 1

2 4030 6818 01 WIRE HARNESS ASSY D 1

3 4030 6810 02 WIRE HARNESS ASSY D 1

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WIRING ACCESSORY AND JIGSKey Part No. Description Destinations Class QTY Standard parts

1 V500 0100 22 saddle D

2 V500 0100 08 saddle D

3 V500 0100 03 Saddle D

4 V570 0100 39 bushing D

5 V500 0100 04 saddle D

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6 V570 0100 23 saddle D

7 V570 0100 26 saddle D

8 V570 0100 27 saddle D

9 V570 0100 28 saddle D

10 V500 0100 46 saddle D

11 V500 0100 61 saddle D

12 V500 0100 20 Saddle D

13 V570 0100 50 Locking Edge Saddle D14 V500 0200 05 clamp C

15 V570 0100 07 saddle D

16 V570 0100 08 saddle D

17 V500 0100 26 saddle D

18 V500 0100 28 saddle D

19 V500 0100 29 saddle D

20 00Z9 2450 8 FLEXIBLE BUSH C

21 00Z9 2451 2 FLEXIBLE BUSH C

22 00Z9 2452 4 FLEXIBLE BUSH D

23 V570 0100 12 saddle D

24 V651 0100 01 connector D

25 V500 0100 07 saddle D

26 V500 0100 05 saddle D

27 V501 0100 06 band D

28 V500 0200 10 clip D

29 V501 0100 01 band D

30 V570 0100 21 Saddle D31 V570 0100 31 holder D

32 V501 0100 12 band D

33 V500 0100 47 saddle D

34 V502 0100 44 PCB Support D

35 V502 0100 45 PCB Support D

36 V502 0100 46 PCB Support D

37 V500 0200 29 clamp D

38 V500 0100 35 saddle D

39 V500 0200 55 clamp D

40 V500 0200 27 lifter D

WIRING ACCESSORY AND JIGS

P 70

1 6 11

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12.7

12.0

6.0

15.8

23.2

1549

2.5

108

10

   

   

   

     

    

2

3

4

5

7

8

9

10

12

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WIRING ACCESSORY AND JIGSKey Part No. Description Destinations Class QTY Standard parts

1 V502 0100 17 support D

2 V651 0100 05 CONNECTOR D

3 V651 0200 01 connector D

4 V501 0100 09 band D

5 9384 1600 11 P-CLIP 10D D

6 26NA JG01 1 O ti U it P iti i Ji D

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6 26NA JG01 1 Optic Unit Positioning Jig D

7 000V 1001 0 GLOVES S

8 000V 1002 0 DUST BAG S

9 000V 1003 0 DEVE COLLECTING SHEET S

10 000V 1004 0 COLLECTING HAND BAG S

11 000V 1005 0 COTTON SWAB A,C,D1,D3,E,F2,G1,I,K S

12 000V -18- 1 CLEANING PAD C,D1,D3,E,F2,G1,I,K A

12 000V -18- 2 CLEANING PAD A A

 ACCESSORY PARTS

P 71

7 8 9 9

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10

12

3

4

5

6

10 11   12

1314

15

12 12

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 ACCESSORY PARTSKey Part No. Description Destinations Class QTY Standard parts

1 50GA 1026 0 ENCLOSED INSTALLING PLATE A C 1

2 A0R5 1029 00 Cover C 1

3 A0R5 1677 00 Cover /Right C 1

4 A0R5 1680 00 Cover C 1

5 A0R5 1712 00 Cover C 1

6 A00J 1699 01 Holder C 1

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6 A00J 1699 01 Holder C 1

7 9384 1600 11 P-CLIP 10D D 1

8 V137 0308 04 screw D 1

9 V123 0450 03 Screw C 2

10 V121 0306 03 screw D 1

11 V121 0308 04 screw D 1

12 V116 0306 03 Screw D 3

13 A00J 9455 00 Logo Mark C,D1,D3,E,F2,G1,I,K C 114 A0RA 1701 01 Cover /Left front C,D1,D3,E,F2,G1,I,K C 1

15 A00J 9437 00 Label A D 1

MAINTENANCE LIST

The items with no Page/Key numbers are not handled as spare parts.

No. Section PM Parts Description Maintenance Cycle (K=1,000) Parts No. Destinations Page/Key Note

QTY Replace

1 Photo Conductor Section Drum 1 250K - -2 Cleaning Blade assy 1 250K 50GA-2090 P20-12

1/1

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2 Cleaning Blade assy 1 250K 50GA 2090 P20 123 Drum unit (without drum) 1 750K 50GA-2001 P17-184 Transfer/separation section Transfer/separation unit 1 500K 50GA-2600 P22-15 Developing section Developer 1 250K - -6 Developing unit 1 750K 50GA-3001 P24-187 Main Body Filter mounting plate assy 1 250K 50GA-3360 P29-148 Ozone Filter 1 250K 50GA10310 P57-129 Suction Filter/A assy 1 250K 40LAR70500 P30-2

10 Filter cover assy 1 250K A0R5R70100 P30-111 Suction Cover 2 assy 2 250K 50GA-3110 P30-712 Paper feed section Pick-up roller 2 300K 4030300501 P31-7/P33-1313 Feed roller 2 300K 4030300501 P31-7/P33-1314 Separation roller assy(Tray 1, 2) 2 300K 4030015101 P32-15/P34-1115 Bypass tray section Paper feed roller 1 200K 4131300101 P36-3616 Separation roller assy 1 200K 4034015101 P35-817 Registration section Loop roller 1 1250K 50GA38650E P38-1118 Registration roller /Rt 1 1250K 50GA38480 P38-1019 Registration bearing /Rt 2 1250K 26NA45360 P38-2120 Registration bearing /Lt 2 1250K 26NA45371 P38-2021 Loop bearing 2 1250K 26NA40820 P38-1222 Fusing section Fusing roller 1 250K 42GA53030 A P49-423 Fusing roller 1 250K 50GA53030 B,C,D1,D3,E,F2,G1,G P49-424 Fusing pressure roller 1 250K 42GA53040 A P49-1324 Fusing pressure roller 1 250K 50GA53040 B,C,D1,D3,E,F2,G1,G P49-1325 Fusing web 1 250K 42GA-5400 A P54-125 Fusing web 1 250K 50GA-5400 B,C,D1,D3,E,F2,G1,G P54-1

26 Heat insulating sleeve /A 2 250K 26NA53720 P49-627 Fusing bearing /Up 2 250K 26NA53712 P49-528 Fusing bearing /Lw 2 250K 50GA53590 P49-1229 Fusing sensor assy 1 500K 50GA-5440 P50-630 Fuse holder assy 1 500K SP00-0112 P50-1031 Fusing claw assy 1 500K 42GA-5330 A P53-131 Fusing claw assy 1 500K 50GA-5330 B,C,D1,D3,E,F2,G1,G P53-132 Fusing driven roller /A assy 2 250K 4040R70600 P52-1333 Fusing driven roller /B assy 2 250K 4040R70700 P52-434 Fusing input gear assy 1 500K 50GA-5461 P51-2035 Paper reverse ection Paper exit suction filter 1 250K 50GA44060 P39-236 Write section Write unit 1 1250K A0R5R70000 P11-1

DESTINATION

Destination No. Destinations V Hz Model No.

 A A1 JAPAN 100 50/60 A0R6001

A2 JAPAN 100 50/60 A0R6001

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 A2 JAPAN 100 50/60 A0R6001

B USA, CANADA 120 60 A0R6011/ A0R6012

C EUROPEAN TYPE 220-240 50/60 A0R6021

DD1 S.E ASIA TYPE

THAILAND, SRI LANKA, SINGAPORE, MALAYSIA, HONGKONG, PAKISTAN, INDIA, BANGLADESH, INDONESIA

220-240 50/60 A0R6041

D3 OCEANIA TYPE AUSTRALIA, NEW ZEALAND 220-240 50/60 A0R6041

E PHILIPPINES 220-240 50/60 A0R6041

FF1 SAUDI ARABIA

F2 SAUDI ARABIA 220-240 50/60 A0R6041

G G1 C.S AMERICA 220-240 50/60 A0R6041G2 C.S AMERICA 120 60 A0R6011

H TAIWAN

IJORDAN, LEBANON, SYRIA, SOUTH AFRICA, IRAQ, IRAN, N.YEMEN, CAME-ROON, UAE, BAHRAIN, OMAN, QATAR, KUWAIT, KENYA, TUNISIA, IVORYCOAST, MOROCCO

220-240 50/60 A0R6041

J CHINA

K KOREA 220-240 50/60 A0R6041